Angewandte Chemie International Edition

Cover image for Angewandte Chemie International Edition

December 22, 2008

Volume 48, Issue 1

Pages 1–235

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Cover Picture: Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics? (Angew. Chem. Int. Ed. 1/2009) (page 1)

      Younan Xia, Yujie Xiong, Byungkwon Lim and Sara E. Skrabalak

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200890275

      Thumbnail image of graphical abstract

      Crystals as you like them: The last decade has witnessed the successful synthesis of metal nanocrystals in a rich variety of shapes. As a zero-order approach, a typical synthesis can be divided into three distinct stages: nucleation, evolution of nuclei into seeds, and growth of seeds into nanocrystals. As illustrated in the cover picture and discussed by Y. Xia et al. in their Review on page 60 ff., the final shape of a nanocrystal is determined primarily by the internal structure of the seed and the binding of the capping agent.

  2. Inside Cover

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Inside Cover: Ultrastable, Highly Fluorescent, and Water-Dispersed Silicon-Based Nanospheres as Cellular Probes (Angew. Chem. Int. Ed. 1/2009) (page 2)

      Yao He, Zhen-Hui Kang, Quan-Song Li, Chi Him A. Tsang, Chun-Hai Fan and Shuit-Tong Lee

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200890277

      Thumbnail image of graphical abstract

      Silicon nanospheres are promising as fluorescent biological probes because of their excellent water dispersibility, high photoluminescence, robust photostability, and favorable biocompatibility. In their Communication on page 128 ff., C.-H. Fan, S.-T. Lee, and co-workers describe how the nanospheres, which are remarkably effective in real-time and long-term imaging, have significant advantages over traditional dyes in biological applications.

  3. Editorial

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. You have free access to this content
      A Source of Joy … (pages 4–6)

      Peter Gölitz

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200805732

  4. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
  5. News

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
  6. Author Profile

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Roland A. Fischer (page 25)

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200890279

      Thumbnail image of graphical abstract
  7. Book Review

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
  8. Highlights

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Carbon Dioxide Fixation

      Oxygen Atom “Cut and Paste” from Carbon Dioxide to a Fischer Carbene Complex (pages 28–30)

      Milko E. van der Boom

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200803953

      Thumbnail image of graphical abstract

      A quick fix: The recently reported process of “oxygen-atom metathesis”, which is akin to olefin metathesis, may be involved in the activation of carbon dioxide. Nucleophilic attack by the d8 metal center of an in situ generated Fischer carbene complex on carbon dioxide affords an unstable metallacycle. Elimination of an organic component, tert-butyl formate, results in the concurrent formation of an iridium–carbonyl complex.

    2. Pericyclic Reactions

      Using Theory and Experiment to Discover Catalysts for Electrocyclizations (pages 31–32)

      Dean J. Tantillo

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200804908

      Thumbnail image of graphical abstract

      Going full circle: Pericyclic reactions can be catalyzed by groups that can bind selectively to a pericyclic transition-state structure (blue) either by interacting directly with rearranging electrons (green) or interacting with substituents (red). The recent success in accelerating six-electron electrocyclizations by using Lewis acids (LAs) is discussed in this Highlight. Future prospects for catalyst design are also emphasized.

  9. Minireview

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. C[BOND]C Coupling

      Catalytic Carbonyl Addition through Transfer Hydrogenation: A Departure from Preformed Organometallic Reagents (pages 34–46)

      John F. Bower, In Su Kim, Ryan L. Patman and Michael J. Krische

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200802938

      Thumbnail image of graphical abstract

      Classical protocols for carbonyl allylation, propargylation, and vinylation typically rely upon the use of preformed allyl metal, allenyl metal, and vinyl metal reagents, respectively, mandating stoichiometric generation of metallic by-products. Through transfer hydrogenative C[BOND]C coupling, carbonyl addition may be achieved from the aldehyde or alcohol oxidation level in the absence of stoichiometric organometallic reagents or metallic reductants.

  10. Reviews

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Post-Polymerization Modification

      Synthesis of Functional Polymers by Post-Polymerization Modification (pages 48–58)

      Marc A. Gauthier, Matthew I. Gibson and Harm-Anton Klok

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200801951

      Thumbnail image of graphical abstract

      More than an afterthought: Functional polymers possessing precisely controlled molecular weight, composition, and architecture remain difficult to synthesize, despite the advent of modern polymerization techniques. This Review surveys different classes of reactive polymer precursors that bear chemoselective side groups and discusses reactions suitable for their post-polymerization modification into functional polymers.

    2. Nanostructures

      Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics? (pages 60–103)

      Younan Xia, Yujie Xiong, Byungkwon Lim and Sara E. Skrabalak

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200802248

      Thumbnail image of graphical abstract

      Function follows form: Controlling the shape of nanocrystals may initially seem like a scientific curiosity, but its goal goes far beyond aesthetic appeal. For metal nanocrystals, shape not only determines their intrinsic physical and chemical properties but also their relevance for electronic, magnetic, optical, catalytic, and sensing applications.

  11. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Scaffold Diversity

      You have full text access to this OnlineOpen article
      Synthesis of Natural-Product-Like Molecules with Over Eighty Distinct Scaffolds (pages 104–109)

      Daniel Morton, Stuart Leach, Christopher Cordier, Stuart Warriner and Adam Nelson

      Version of Record online: 17 NOV 2008 | DOI: 10.1002/anie.200804486

      Thumbnail image of graphical abstract

      Seeking scaffold diversity: A synthetic approach for the combinatorial variation of the scaffolds of small molecules is described. Using just six basic reaction types, compounds with 84 distinct scaffolds were prepared. The compounds had many natural-product-like structural features including rich stereochemistry, heterocyclic and unsaturated ring systems, and dense functionalization.

    2. Dendritic Nanopores

      Functional Group Density and Recognition in Polymer Nanotubes (pages 110–114)

      Elamprakash N. Savariar, Matthew M. Sochat, Akamol Klaikherd and S. Thayumanavan

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804136

      Thumbnail image of graphical abstract

      Branching out: The use of polypropylene–imine dendrimers as scaffolds leads to the precise control of the pore size of functionalized nanoporous membranes, which can be used for molecular recognition. The nanopores show a finite transition in generation-dependent molecular discrimination capabilities, which arises not only from the size of the final pores, but also from the functional group density of the dendrimers (see picture).

    3. Activation of P4

      Activation of White Phosphorus by Reduction in the Presence of a Zirconium Diamidodiphosphine Macrocycle: Formation of a Bridging Square-Planar cyclo-P4 Unit (pages 115–117)

      Wolfram W. Seidel, Owen T. Summerscales, Brian O. Patrick and Michael D. Fryzuk

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200803739

      Thumbnail image of graphical abstract

      It's hip to be square: A perfectly planar square of phosphorus atoms is prepared by the reduction of [ZrCl2{PhP(CH2SiMe2NSiMe2CH2)2PPh}] in the presence of P4 (see structure). On the basis of the P[BOND]P single bond lengths and oxidation state of the Zr centers, this unit is formulated as a [P4]4− fragment.

    4. Functionalized Surfaces

      Selective Removal of DNA-Labeled Nanoparticles from Planar Substrates by DNA Displacement Reactions (pages 118–122)

      Zhenyu Zhang, Quan Cheng and Pingyun Feng

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200803840

      Thumbnail image of graphical abstract

      Touching the surface: DNA-labeled gold nanoparticles can be removed from a planar substrate by using a heterogeneous DNA displacement reaction. An advantage of using a planar substrate is that quantitative and kinetic studies of the displacement process could be achieved. This provides a fascinating way to control nanomaterials and to develop novel nanodevices on planar substrates by combining DNA hybridization and displacement reactions.

    5. Time-Resolved Spectroscopy

      Picosecond Transient Infrared Study of the Ultrafast Deactivation Processes of Electronically Excited B-DNA and Z-DNA Forms of [poly(dG-dC)]2 (pages 123–127)

      Gerard W. Doorley, David A. McGovern, Michael W. George, Michael Towrie, Anthony W. Parker, John M. Kelly and Susan J. Quinn

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200803904

      Thumbnail image of graphical abstract

      Very fast: UV excitation of the right-handed B form or the left-handed Z form of [poly(dG-dC)]2 results in transient IR absorption bands that remain long after the 1ππ* state is predicted to have decayed (see picture). A biexponential decay is observed for B-DNA, which is assigned to the vibrationally excited ground state and the 1nNπ* state. The decay of Z-DNA is dominated by single-exponential decay, which is assigned to an exciplex state.

    6. Silicon Quantum Dots

      Ultrastable, Highly Fluorescent, and Water-Dispersed Silicon-Based Nanospheres as Cellular Probes (pages 128–132)

      Yao He, Zhen-Hui Kang, Quan-Song Li, Chi Him A. Tsang, Chun-Hai Fan and Shuit-Tong Lee

      Version of Record online: 31 OCT 2008 | DOI: 10.1002/anie.200802230

      Thumbnail image of graphical abstract

      In silico to in vivo: The design strategy for silicon-based fluorescent nanospheres with controllable sizes was based on the results of theoretical calculations. These nanospheres are fully water dispersible, highly photoluminescent, extremely photostable, and suitably biocompatible. Cell imaging results further demonstrate the nanospheres are remarkably efficacious for real-time and long-term cell monitoring (see picture).

    7. Molecular Devices

      Switchable Motion of DNA on Solid Supports (pages 133–137)

      Johann Elbaz, Ran Tel-Vered, Ronit Freeman, Huseyin Bekir Yildiz and Itamar Willner

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200802905

      Thumbnail image of graphical abstract

      Tracking the changes: The switchable translocation of a nucleic acid strand with a methylene blue (MB+) redox group on a DNA track associated with a surface can be triggered by adenosine monophosphate (AMP, green) and adenosine deaminase (purple, see picture); the latter converts AMP into inosine monophosphate (orange). The motion of the nucleic acid can be followed by the electrochemical, photo-electrochemical, and fluorescence signals.

    8. Surface-Enhanced Raman Scattering

      Au@pNIPAM Colloids as Molecular Traps for Surface-Enhanced, Spectroscopic, Ultra-Sensitive Analysis (pages 138–143)

      Ramon A. Álvarez-Puebla, Rafael Contreras-Cáceres, Isabel Pastoriza-Santos, Jorge Pérez-Juste and Luis M. Liz-Marzán

      Version of Record online: 27 NOV 2008 | DOI: 10.1002/anie.200804059

      Thumbnail image of graphical abstract

      Caught in a trap: Colloids of gold nanoparticles coated with a thermally responsive poly-(N-isopropylacrylamide) (pNIPAM) microgel can trap molecules in different ways as a function of temperature (see scheme). The porous pNIPAM shells prevent electromagnetic coupling between metal particles, thus providing highly reproducible surface-enhanced Raman scattering (SERS) signals and intensity.

    9. Lithography

      Direct Fabrication of 3D Periodic Inorganic Microstructures using Conformal Phase Masks (pages 144–148)

      Matthew C. George, Erik C. Nelson, John A. Rogers and Paul V. Braun

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200804171

      Thumbnail image of graphical abstract

      Nitty gritty: A chemically amplified poly(methylsilsesquioxane) resist based on the acid-catalyzed condensation of silanol end groups was developed for direct fabrication of hybrid 3D microstructures (see picture) by conformal and maskless proximity-field nanopatterning. Fibers, colloidal particles, helical arrays, and photonic crystals were fabricated by varying phase-mask design and exposure conditions.

    10. Polyoxometalates

      Unprecedented and Differently Applicable Pentagonal Units in a Dynamic Library: A Keplerate of the Type {(W)W5}12{Mo2}30 (pages 149–153)

      Christian Schäffer, Alice Merca, Hartmut Bögge, Ana Maria Todea, Melissa L. Kistler, Tianbo Liu, René Thouvenot, Pierre Gouzerh and Achim Müller

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200804496

      Thumbnail image of graphical abstract

      Magic pentagons: Exploitation of versatile pentagonal units/ligands has previously led to giant molybdenum oxide based curved species, including spherical Keplerates. Similar methodology is now also applicable to the related tungstate scenario (see corresponding basic central pentagonal unit in green).

    11. Cross-Coupling

      Catalytic Asymmetric Cross-Couplings of Racemic α-Bromoketones with Arylzinc Reagents (pages 154–156)

      Pamela M. Lundin, Jorge Esquivias and Gregory C. Fu

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804888

      Thumbnail image of graphical abstract

      Nickel box: The first catalytic asymmetric method for cross-coupling arylzinc reagents with α-bromoketones has been developed (see scheme). This stereoconvergent carbon–carbon bond-forming process occurs under unusually mild conditions and without activators, thereby allowing the generation of potentially labile tertiary stereocenters.

    12. Radical Scavengers

      Garlic: Source of the Ultimate Antioxidants—Sulfenic Acids (pages 157–160)

      Vipraja Vaidya, Keith U. Ingold and Derek A. Pratt

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804560

      Thumbnail image of graphical abstract

      The medicinal properties of garlic, thought to derive at least in part from the antioxidant activity of its sulfur-containing secondary metabolites, have been recognized for hundreds of years. The ability of garlic to scavenge peroxyl radicals can be accounted for in terms of the action of transient sulfenic acids, which are predicted to react by diffusion-controlled five-center proton-coupled electron transfer (see scheme and transition state).

    13. Photocatalytic Decontamination

      Layer-by-Layer Deposited Titanate-Based Nanotubes for Solar Photocatalytic Removal of Chemical Warfare Agents from Textiles (pages 161–164)

      Mathieu Grandcolas, Alain Louvet, Nicolas Keller and Valérie Keller

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200802932

      Thumbnail image of graphical abstract

      Self-decontaminating textiles were prepared using layer-by-layer deposition of highly active WO3/titanate nanotubes for photocatalytic removal of sulfide and organophosphonate simulants and authentic chemical warfare agents by using solar light.

    14. Electrocatalysis

      Oxygen Reduction Activity of a Copper Complex of 3,5-Diamino-1,2,4-triazole Supported on Carbon Black (pages 165–167)

      Matthew S. Thorum, Jessica Yadav and Andrew A. Gewirth

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200803554

      Thumbnail image of graphical abstract

      Reduction deduction: Precipitation of an insoluble copper triazole complex onto a carbon black support leads to the formation of an efficient catalyst for the four-electron reduction of O2 to H2O. The oxygen-reduction activity is reported over a wide pH range from 1 to 13 and the onset of the reaction occurs at potentials as high as 0.86 V. Ex situ magnetic susceptibility measurements demonstrate the presence of multicopper sites.

    15. Catalysis

      Heteropolyanion-Based Ionic Liquids: Reaction-Induced Self-Separation Catalysts for Esterification (pages 168–171)

      Yan Leng, Jun Wang, Dunru Zhu, Xiaoqian Ren, Hanqing Ge and Lei Shen

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200803567

      Thumbnail image of graphical abstract

      It comes out in the wash: In the esterification of citric acid with n-butanol, heteropolyanion-based ionic liquid (IL) catalysts show high catalytic activity, self-separation, and easy reuse. The good solubility in reactants, nonmiscibility with ester product, and high melting point of the IL catalysts enable the reaction-induced switching from homogeneous (b in the picture) to heterogeneous (c) with subsequent precipitation of the catalyst (d).

    16. Synthetic Methods

      An Unexpected Reaction of Arenesulfonyl Cyanides with Allylic Alcohols: Preparation of Trisubstituted Allyl Sulfones (pages 172–174)

      Leleti Rajender Reddy, Bin Hu, Mahavir Prashad and Kapa Prasad

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200803836

      Thumbnail image of graphical abstract

      An efficient and practical protocol for the highly selective preparation of substituted allyl sulfones has been developed. Arenesulfonyl cyanides, Baylis–Hillman adducts, and simple allylic alcohols give an unforeseen outcome (see scheme).

    17. Nanoparticle Clusters

      Controlled Growth of Nanoparticle Clusters through Competitive Stabilizer Desorption (pages 175–178)

      Jacek K. Stolarczyk, Swapankumar Ghosh and Dermot F. Brougham

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200803895

      Thumbnail image of graphical abstract

      Size-controlled clusters: Clusters of preformed 15 nm oleic acid coated superparamagnetic iron oxide nanoparticles were prepared through partially destabilizing suspensions of the dispersed nanoparticles with CN-modified silica. This effect induced gradual formation of monodisperse, superparamagnetic clusters by competition between the solid phases for the surfactant. The cluster size can be controlled within the range 15–200 nm as the growth process can be stopped and restarted.

    18. Synthetic Methods

      Synthesis of 3,4-Dihydroisoquinolines by a C(sp3)[BOND]H Activation/Electrocyclization Strategy: Total Synthesis of Coralydine (pages 179–182)

      Manon Chaumontet, Riccardo Piccardi and Olivier Baudoin

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200804444

      Thumbnail image of graphical abstract

      Thanks to C[BOND]H activation: 3-Aryl-3,4-dihydroisoquinolines (2) are synthesized from bromobenzenes (1) by a sequence comprising a C(sp3)[BOND]H activation, a Curtius rearrangement, and a tandem electrocyclic ring-opening/6π electrocyclization. This method is applied to the synthesis of various isoquinoline-containing molecules, including the tetrahydroprotoberberine alkaloid coralydine.

    19. Nanoparticles

      Core–Multishell Magnetic Coordination Nanoparticles: Toward Multifunctionality on the Nanoscale (pages 183–187)

      Laure Catala, Daniela Brinzei, Yoann Prado, Alexandre Gloter, Odile Stéphan, Guillaume Rogez and Talal Mallah

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200804238

      Thumbnail image of graphical abstract

      Simple epitaxial growth of a cyano-bridged coordination network on different core particles can lead to core–multishell nanoparticles. Shell growth is controlled on the nanometer scale and can be repeated with different metal ions. Particles can be prepared with a distinct composition in each layer (see images), and synergy is observed between their magnetic properties.

    20. Peroxonickel Complexes

      Structural Characterization and Oxidation Activity of a Nickel(II) Alkylperoxo Complex (pages 188–191)

      Shiro Hikichi, Hideho Okuda, Yoshiko Ohzu and Munetaka Akita

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804402

      Thumbnail image of graphical abstract

      Substrate-dependent reactivity: The nickel(II) alkylperoxo complex 1 (see structure), obtained by the dehydrative condensation of the nickel(II) hydroxo complex with tert-butylhydroperoxide has a unique structure; the coordination mode of the O[BOND]O moiety is an intermediate between η1 and η2. Compound 1 exhibits substrate-dependent reactivity toward aliphatic C[BOND]H, phosphines, carbon monoxide, and aldehydes.

    21. Asymmetric Catalysis

      [4+2] Cycloaddition of Ketenes with N-Benzoyldiazenes Catalyzed by N-Heterocyclic Carbenes (pages 192–195)

      Xue-Liang Huang, Lin He, Pan-Lin Shao and Song Ye

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804487

      Thumbnail image of graphical abstract

      Enantioselectivity switch: A catalytic enantioselective [4+2] cycloaddition reaction of alkylarylketenes with N-aryl-N′-benzoyldiazenes or N,N′-dibenzoyldiazenes to give 1,3,4-oxadiazin-6-ones 1 was developed by employing N-heterocyclic carbene (NHC) catalysts. The enantioselectivities could be switched for most reactions by changing the substituents on the NHC catalyst. TBS=tert-butyldimethylsilyl, Mes=2,4,6-trimethylphenyl.

    22. Crystal Growth

      Monodisperse BaF2 Nanocrystals: Phases, Size Transitions, and Self-Assembly (pages 196–200)

      Ting Xie, Shuai Li, Qing Peng and Yadong Li

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200804528

      Thumbnail image of graphical abstract

      BaF2fled no more: Monodisperse cubic- and orthorhombic-phase BaF2 nanocrystals were formed readily by the liquid–solid–solution approach. Nucleus growth of BaF2 occurs under kinetic control, whereby their size and morphology depend greatly on the ripening time and concentration of surfactants (see scheme). The phase of the BaF2 crystals is under thermodynamic control.

    23. C[BOND]H Bond Functionalization

      Palladium-Catalyzed Direct Arylations of Heteroarenes with Tosylates and Mesylates (pages 201–204)

      Lutz Ackermann, Andreas Althammer and Sabine Fenner

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804517

      Thumbnail image of graphical abstract

      A toss up: A highly active palladium complex enabled the first direct arylation of heteroarenes through C[BOND]H bond functionalization using tosylates or mesylates as electrophiles with ample scope.

    24. Synthetic Methods

      Radical Catalysis of Kumada Cross-Coupling Reactions Using Functionalized Grignard Reagents (pages 205–209)

      Georg Manolikakes and Paul Knochel

      Version of Record online: 3 DEC 2008 | DOI: 10.1002/anie.200803730

      Thumbnail image of graphical abstract

      Palladium, radically different: A wide range of polyfunctional aryl- and heteroarylmagnesium reagents undergo fast Kumada cross-couplings (see scheme) with functionalized aryl bromides in the presence of a palladium catalyst and an alkyl iodide as additive. These reactions proceed by a radical pathway.

    25. Nanostructured Electrodes

      Synthesis and Electrode Performance of Nanostructured V2O5 by Using a Carbon Tube-in-Tube as a Nanoreactor and an Efficient Mixed-Conducting Network (pages 210–214)

      Yong-Sheng Hu, Xi Liu, Jens-O. Müller, Robert Schlögl, Joachim Maier and Dang Sheng Su

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200802988

      Thumbnail image of graphical abstract

      Totally tubular electrodes: A new design is proposed for nanostructured electrodes for high-performance lithium batteries (see picture) based on the use of carbon tube-in-tube (CTIT) as both a nanoreactor and an efficient ion- and electron-conducting network. A V2O5/CTIT nanocomposite electrode is prepared to demonstrate this concept. The resulting materials exhibit a significant improved lithium-storage performance.

    26. Solid-State Chemistry

      Nd2K2IrO7 and Sm2K2IrO7: Iridium(VI) Oxides Prepared under Ambient Pressure (pages 215–218)

      Samuel J. Mugavero III, Mark D. Smith, Won-Sub Yoon and Hans-Conrad zur Loye

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200804045

      Thumbnail image of graphical abstract

      No pressure: The most-oxidized iridium oxides known to date are prepared in a hydroxide flux under normal pressure. They contain iridium centers exclusively in the +VI oxidation state and are characterized crystallographically. The picture shows the structure of the Ln2K2IrO7 (Ln=Nd, Sm) and its structural components: IrO6 octahedra (black), KO10 polyhedra (beige), LnO10 polyhedra (blue).

    27. Nanotechnology

      Controlled Nucleation of DNA Metallization (pages 219–223)

      Christian T. Wirges, Jan Timper, Monika Fischler, Alla S. Sologubenko, Joachim Mayer, Ulrich Simon and Thomas Carell

      Version of Record online: 28 NOV 2008 | DOI: 10.1002/anie.200803123

      Thumbnail image of graphical abstract

      Silver-plated DNA: The deposit of a thin metal layer on biomolecules, such as DNA, requires the formation of small, “magic-sized” metal nuclei. Through the careful design of a reducing chemical functionality in the form of a dialdehyde, the nucleation process and thus the metallization step can be controlled (see scheme).

    28. Surface Chemistry

      Permanent Pattern-Resolved Adjustment of the Surface Potential of Graphene-Like Carbon through Chemical Functionalization (pages 224–227)

      Fabian M. Koehler, Norman A. Luechinger, Dominik Ziegler, Evagelos K. Athanassiou, Robert N. Grass, Antonella Rossi, Christofer Hierold, Andreas Stemmer and Wendelin J. Stark

      Version of Record online: 26 NOV 2008 | DOI: 10.1002/anie.200804485

      Thumbnail image of graphical abstract

      Beyond the age of silicon: A combination of radical chemistry under standard conditions and clean-room lithography can alter the electronic structure of graphene layers permanently through covalent chemical functionalization. The potential change follows the Hammett correlation. This simple method is a promising approach for graphene-based electronics.

  12. Preview

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Author Profile
    8. Book Review
    9. Highlights
    10. Minireview
    11. Reviews
    12. Communications
    13. Preview
    1. Preview: Angew. Chem. Int. Ed. 2/2009 (page 235)

      Version of Record online: 18 DEC 2008 | DOI: 10.1002/anie.200890278

SEARCH

SEARCH BY CITATION