European Journal of Inorganic Chemistry

Cover image for Vol. 2008 Issue 18

June 2008

Volume 2008, Issue 18

Pages 2771–2920

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Microreview
    6. Full Papers
  2. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Microreview
    6. Full Papers
  3. News

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Microreview
    6. Full Papers
  4. Microreview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Microreview
    6. Full Papers
    1. Donor-Functionalised N-Heterocyclic Carbene Complexes of Group 9 and 10 Metals in Catalysis: Trends and Directions (pages 2781–2800)

      Adrien T. Normand and Kingsley J. Cavell

      Version of Record online: 21 MAY 2008 | DOI: 10.1002/ejic.200800323

      Thumbnail image of graphical abstract

      Donor-functionalised NHCs can create a wide variety of coordination environments for metals (e.g. hemilabile, chelating, bis(carbene), pincer or chiral). These features generate impressive catalytic activities forthe resulting complexes, especially in the case of group 9 and 10 metals. This Microreview focuses on the latest achievements obtained in homogeneous catalysis with these complexes.

  5. Full Papers

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Microreview
    6. Full Papers
    1. Neutral and Monocationic Half-Sandwich Methyl Rare-Earth Metal Complexes: Synthesis, Structure, and 1,3-Butadiene Polymerization Catalysis (pages 2801–2809)

      Dominique Robert, Thomas P. Spaniol and Jun Okuda

      Version of Record online: 28 FEB 2008 | DOI: 10.1002/ejic.200800040

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      Half-sandwich rare-earth metal tetramethylaluminate complexes [Ln(η5-C5Me4SiMe3){(μ-Me)2(AlMe2)}2] (Ln = Y, La, Nd, Sm, Lu) were protonolyzed to give monocationic methyl complexes [Ln(η5-C5Me4SiMe3)Me(thf)3]+[BPh4]. Upon activation with [Ph3C]+[B(C6F5)4], the neutral half-sandwich tetramethylaluminate complex catalyzed the polymerization of butadiene in the presence of [AliBu3] to give trans-1,4-polybutadiene with narrow polydispersities (Mn/Mw = 1.05–1.09).

    2. Rare-Earth Metal Alkyl and Hydride Complexes Supported by a Linked Anilido–cyclopentadienyl Ligand: Synthesis, Structure, and Reactivity (pages 2810–2819)

      Dominique Robert, Peter Voth, Thomas P. Spaniol and Jun Okuda

      Version of Record online: 7 MAY 2008 | DOI: 10.1002/ejic.200800216

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      “Constrained geometry” alkyl complexes containing a ligand with an anilido group and a CH2SiMe2 link were converted into dimeric hydride complexes [Y(η5-C5Me4CH2SiMe2NC6H4R-4-κN)(μ-H)(thf)]2. Pyridine inserts into the Y–H bond in a 1,2-fashion to afford an isolable 2-hydropyridyl complex, which reacts with tBuC≡CH, to form the dimeric alkynyl complex [Y(η5-C5Me4CH2SiMe2NPh-κN)(μ-C≡CtBu)]2.

    3. A Tetragonal Core with Asymmetric Iron Environments Supported Solely by Bis(μ-OH){μ-(O–H···O)} Bridging and Terminal Pyridine Amide (N, O) Coordination: A New Member of the Tetrairon(III) Family (pages 2820–2829)

      Akhilesh K. Singh, Wilson Jacob, Athanassios K. Boudalis, Jean-Pierre Tuchagues and Rabindranath Mukherjee

      Version of Record online: 13 MAY 2008 | DOI: 10.1002/ejic.200800032

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      The metric parameters of [Fe4(H2bpp)4(μ-OH)2(μ-OHO)][ClO4]7·2H2O·3MeCN (3MeCN) [H2bpp = 1,3-bis(2-pyridinecarboxamido)propane] reveals that the four iron atoms are located at the vertices ofa {FeIII4(μ–OH)2(μ–OHO)}7+ flattened tetragon, which is unique amongst Fe–(OHO)–Fe bridged tetrairon(III) complexes reported so far.

    4. {2-[1-(2,6-Diisopropylphenylimino)ethyl]pyridyl}palladium Dibromide Polymorphs Originating from Different Br···π and C–H···Br Contacts (pages 2830–2836)

      Wenjuan Zhang, Xiubo Tang, Hongwei Ma, Wen-Hua Sun and Christoph Janiak

      Version of Record online: 14 MAY 2008 | DOI: 10.1002/ejic.200800260

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      The polymorphism in the dimorphs of the palladium title compound 1 is traced to packing differences due to Br···π contacts between the Br···PdN2C2 heterocycle together with different C–H···Br bonds.

    5. “Hidden” Spin–Spin Interactions in Complex Multispin Solids (pages 2837–2846)

      Elena V. Gorelik, Victor I. Ovcharenko and Martin Baumgarten

      Version of Record online: 15 MAY 2008 | DOI: 10.1002/ejic.200701305

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      Quantum chemical analyses allowed us to reconstruct the complicated picture of exchange pathways inherent in the nature of heterospin chains based on the Cu(hfac)2 complex with a nitronyl nitroxide biradical, and unexpectedly revealed a family of “hidden” interactions in the system of exchange parameters. This opened the way to a meaningful fit of the magnetic data.

    6. How to Get Ternary Solid Solutions Fe1–xMxO (M = Co, Ni)? A Thermodynamic Concept (pages 2847–2855)

      Peer Schmidt

      Version of Record online: 15 MAY 2008 | DOI: 10.1002/ejic.200800218

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      In spite of the almost perfect crystallographic conditions for the formation of mixed phases Fe1–xCoxO and Fe1–xNixO no homogeneous solid solutions series exist. Due to the different redox potentials [p(O2) = f(T)] of the binary phases “FeO”and CoO the solid solution shows a miscibility gap, by reason of the broader difference of redox potentials of “FeO” and NiO a complete series of mixed crystals cannot exist.

    7. Lanthanide-Based Conjugates as Polyvalent Probes for Biological Labeling (pages 2856–2862)

      Stéphanie Claudel-Gillet, Jérôme Steibel, Nicolas Weibel, Thomas Chauvin, Marc Port, Isabelle Raynal, Eva Toth, Raymond F. Ziessel and Loïc J. Charbonnière

      Version of Record online: 15 MAY 2008 | DOI: 10.1002/ejic.200800269

      Thumbnail image of graphical abstract

      A single family of lanthanide-based labels is shown to be efficient both for time-resolved luminescence microscopy (Ln =Sm, Eu, Tb, and Dy) and for MRI contrastagent applications (Ln = Gd).

    8. A Modular Approach Towards Nonsymmetrical Bis(metallosalen) Building Blocks (pages 2863–2873)

      Simona Curreli, Eduardo C. Escudero-Adán, Jordi Benet-Buchholz and Arjan W. Kleij

      Version of Record online: 20 MAY 2008 | DOI: 10.1002/ejic.200800274

      Thumbnail image of graphical abstract

      A modular approach towards the formation of nonsymmetrical bis(metallosalen)s was developed starting from readily accessible bis(imine) precursors, which allowed the subsequent introduction of various other peripheral groups. The bis(metallosalen) complexes can be used as supramolecular building blocks.

    9. The Cyclooligomerisation of Acetylene at Metal Centres (pages 2874–2883)

      Rong Xu, Paul Winget and Timothy Clark

      Version of Record online: 13 MAY 2008 | DOI: 10.1002/ejic.200800077

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      Density-functional theory and ab initio calculations on the trimerisation of acetylene at CoCp centres reveal an additional, previously unknown reaction path. An analysis of the mechanisms of the individual steps in the reaction reveals the role of electron-transfer catalysis and the connection to two-state reactivity.

    10. The Fabrication and Magnetic Properties of Ni Fibers Synthesized Under External Magnetic Fields (pages 2884–2891)

      Chunhong Gong, Laigui Yu, Yuping Duan, Juntao Tian, Zhishen Wu and Zhijun Zhang

      Version of Record online: 20 MAY 2008 | DOI: 10.1002/ejic.200800200

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      The ultrafine Ni fibers were easily fabricated, and their mean length increased markedly with increasing Ni2+ ion concentration and intensity of the external magnetic field. The present approach has the advantage of having a fast reaction rate and low cost and may be promising for the effective control of the shape and magnetic properties of magnetic materials.

    11. Synthesis and Characterization of Acetonitrile-Ligated Transition-Metal Complexes with Tetrakis(pentafluorophenyl)borate as Counteranions (pages 2892–2898)

      Ahmed K. Hijazi, Akef Al Hmaideen, Syukri Syukri, Narayanan Radhakrishnan, Eberhardt Herdtweck, Brigitte Voit and Fritz E. Kühn

      Version of Record online: 14 MAY 2008 | DOI: 10.1002/ejic.200800201

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      Acetonitrile-ligated transition-metal complexes containing tetrakis(pentaflourophenyl)borate as counteranions were prepared in high yields and characterized by IR, NMR, and UV spectroscopy and elemental analysis. The catalytic activity for isobutene polymerization was examined.

    12. Study of the Effect of the Phosphane Bridging Chain Nature on the Structural and Photophysical Properties of a Series of Gold(I) Ethynylpyridine Complexes (pages 2899–2909)

      Montserrat Ferrer, Albert Gutiérrez, Laura Rodríguez, Oriol Rossell, João C. Lima, Mercè Font-Bardia and Xavier Solans

      Version of Record online: 8 MAY 2008 | DOI: 10.1002/ejic.200800167

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      A series of alkynyl phosphane AuI complexes were prepared. The X-ray crystal structures show the influence of the nature of the phosphane spacer on the establishment of aurophilic interactions. The absorption and emission properties of thecomplexes were studied; although UV/Vis differences were observed for compounds with intramolecular Au–Au contacts, no trend was observed in the emissionbehaviour.

    13. Quaterpyridine Ligands Forming Helical Complexes of Mono- and Dinuclear (Helicate) Forms (pages 2910–2920)

      Artur R. Stefankiewicz, Monika Wałęsa, Piotr Jankowski, Artur Ciesielski, Violetta Patroniak, Maciej Kubicki, Zbigniew Hnatejko, Jack M. Harrowfield and Jean-Marie Lehn

      Version of Record online: 14 MAY 2008 | DOI: 10.1002/ejic.200800172

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      The self-assembly of ligands L1 and L2 containing N2- and N2O-dentate binding units form helicates with copper(I) and silver(I) and mononuclear supramolecular complexes with cobalt(II) and zinc(II). The compounds were characterised by microanalyses and crystallographic and spectroscopic data.

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