European Journal of Inorganic Chemistry

Cover image for Vol. 2013 Issue 31

November 2013

Volume 2013, Issue 31

Pages 5374–5502

  1. Cover Picture

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    3. Cover Profile
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    5. Graphical Abstract
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      Intermediates in Ammonothermal GaN Crystal Growth under Ammonoacidic Conditions (Eur. J. Inorg. Chem. 31/2013)

      Shiyu Zhang, Frauke Hintze, Wolfgang Schnick and Rainer Niewa

      Version of Record online: 21 OCT 2013 | DOI: 10.1002/ejic.201390139

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      The cover picture shows on the right several gallium-containing species as possible intermediates of GaN crystal growth in supercritical ammonia under ammonoacidic conditions. An understanding of the processes of ammonothermal crystal growth is largely lacking, since the underlying chemistry was so far nearly completely unknown. In the left part of the figure, crystals of solid compounds recovered from ammonia are shown, which contain ionic species indicating their presence also in solution under supercritical conditions. Crystal structures and spectroscopic data (background of the right part) afford detailed information on the chemical nature of these species. Details are discussed in the article by R. Niewa et al. on p. 5387 ff. For more on the story behind the cover research, see the Cover Profile.

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      Intermediates in Ammonothermal GaN Crystal Growth under Ammonoacidic Conditions (page 5374)

      Shiyu Zhang, Frauke Hintze, Wolfgang Schnick and Rainer Niewa

      Version of Record online: 21 OCT 2013 | DOI: 10.1002/ejic.201301247

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      Colleagues working on crystal growth and chemical engineering recently convinced me of its technological importance for the development of superior nitride-based semiconductor materials...

      Read more about the story behind the cover in the Cover Profile and about the research itself on p. 5387 ff.

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    1. Gallium Nitride Growth

      Intermediates in Ammonothermal GaN Crystal Growth under Ammonoacidic Conditions (pages 5387–5399)

      Shiyu Zhang, Frauke Hintze, Wolfgang Schnick and Rainer Niewa

      Version of Record online: 2 OCT 2013 | DOI: 10.1002/ejic.201300958

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      Although the ammonothermal method holds great promise for the growth of high-quality GaN single crystals, the growth mechanism is not fully understood. This work focuses on the intermediate compounds in the growth of GaN crystals with acidic mineralizers in supercritical NH3. The formation conditions, crystal structures, hydrogen bonding, thermal behavior, and coordination chemistry are discussed.

    2. Hierarchical Microstructures

      A Facile Route to Flowerlike Bi2S3 Constructed by Polycrystalline Nanoplates with Enhanced Electrochemical Properties (pages 5400–5407)

      Rencheng Jin, Guihua Li, Junshen Liu and Lixia Yang

      Version of Record online: 13 SEP 2013 | DOI: 10.1002/ejic.201300800

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      Hierarchical Bi2S3 microstructures with good electrochemical properties were synthesized by a facile solvothermal method.

    3. Cu-Zeolite Catalysts

      Copper(II)–imida-salen Complexes Encapsulated into NaY Zeolite for Oxidations Reactions (pages 5408–5417)

      Iwona Kuźniarska-Biernacka, M. Alice Carvalho, Soren B. Rasmussen, Miguel A. Bañares, Krzysztof Biernacki, Alexandre L. Magalhães, Anabela G. Rolo, António M. Fonseca and Isabel C. Neves

      Version of Record online: 11 SEP 2013 | DOI: 10.1002/ejic.201300656

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      Novel catalysts based on imidazole Schiff bases and incorporated into NaY zeolite have been prepared and characterised. A DFT study confirmed the stability of the copper complexes formed. The heterogeneous catalysts are active and selective in the oxidation of alcohols. The catalysts could be reused without loss of activity.

    4. Platinum Complexes

      On the Reactivity of Platina-β-diketone and Acetylplatinum(II) Complexes toward 2-(Diphenylphosphanyl)benzaldehyde and Its Dioxolane Derivative (pages 5418–5427)

      Tim Kluge, Claudio Mendicute-Fierro, Martin Bette, Antonio Rodríguez-Diéguez, Maria A. Garralda and Dirk Steinborn

      Version of Record online: 16 SEP 2013 | DOI: 10.1002/ejic.201300779

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      The reactions of diacetylbis(amine)platinum(II) complexes 2 with the aldehyde–phosphane ligand L2 results in the formation of diacetylplatinum complexes 10, which bear imine–phosphane ligands. Complexes 9 with hemiaminal–phosphane ligands are intermediates. The analogous reactions with the acetal-protected derivative of L2 and with platina-β-diketones are also presented.

    5. Magnetic Nanoparticle Catalyst

      Magnetic and Stable H3PW12O40-Based Core@shell Nanomaterial towards the Esterification of Oleic Acid with Methanol (pages 5428–5435)

      Shi Li, Shang-Ru Zhai, Jian-Ming Zhang, Zuo-Yi Xiao, Qing-Da An, Ming-Hui Li and Xiao-Wei Song

      Version of Record online: 17 SEP 2013 | DOI: 10.1002/ejic.201300813

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      A novel, magnetically recoverable, and stable catalyst, Fe3O4@SiO2–NH2/HPW@CS/HPW, has been prepared and a high methyl oleate yield of 93.2 % was achieved in the esterification of methanol and oleic acid.

    6. Materials for Li Batteries

      Facile Combustion Synthesis and Electrochemical Performance of the Cathode Material Li1.231Mn0.615Ni0.154O2 (pages 5436–5442)

      Shi-Xuan Liao, Ben-He Zhong, Xiaodong Guo, Xia-Xing Shi and Wei-Bo Hua

      Version of Record online: 17 SEP 2013 | DOI: 10.1002/ejic.201300822

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      The cathode material Li1.231Mn0.615Ni0.154O2 has been successfully synthesized by a facile combustion method. The final product exhibits good electrochemical performances.

    7. Mixed-Valent Borates

      The Oxonitridoborate Eu5(BO2.51(7)N0.49(7))4 and the Mixed-Valent Borates Sr3Ln2(BO3)4 (Ln = Ho, Er) (pages 5443–5449)

      Henning A. Höppe, Karolina Kazmierczak, Christine Grumbt, Lisa Schindler, Inga Schellenberg and Rainer Pöttgen

      Version of Record online: 16 SEP 2013 | DOI: 10.1002/ejic.201300827

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      The mixed-valent borates Sr3Ln2(BO3)4 (Ln = Ho, Er) and Eu5(BO2.51(7)N0.49(7))4 have mixed occupations of the metal sites, and the europium borate also contains nitrogen–oxygen mixed sites; the intense yellow colour of the europium compound originates from a charge-transfer transition.

    8. Carbides

      Convenient Preparation of Ternary Carbidoaluminates – The Example MgAl2C2 (pages 5450–5453)

      Mariusz Kubus and H.-Jürgen Meyer

      Version of Record online: 16 SEP 2013 | DOI: 10.1002/ejic.201300829

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      β-MgAl2C2 was synthesized at 900 °C in a closed system with the use of Li2C2 in a solid-state metathesis reaction. This new synthesis method for ternary carbides employs Li2C2 as a source of carbon ions and can be applied to the synthesis of other multinary carbides.

    9. Iron Oxide Polymorphs

      Insights on Growth and Nanoscopic Investigation of Uncommon Iron Oxide Polymorphs (pages 5454–5461)

      Giorgio Carraro, Chiara Maccato, Elza Bontempi, Alberto Gasparotto, Oleg I. Lebedev, Stuart Turner, Laura E. Depero, Gustaaf Van Tendeloo and Davide Barreca

      Version of Record online: 19 SEP 2013 | DOI: 10.1002/ejic.201300873

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      We have developed an efficient vapor-phase preparation method to selectively produce the scarcely investigated β- and ϵ-Fe2O3 nanostructured polymorphs. A detailed characterization highlights the crucial role of the growth temperature and reaction atmosphere (O2 versus O2 + H2O) in tailoring the compositional, structural, and morphological properties of the system.

    10. Ring-Opening Polymerization

      Ruthenium–Triazene Complexes as Latent Catalysts for UV-Induced ROMP (pages 5462–5468)

      Dongren Wang, Jörg Unold, Martina Bubrin, Iris Elser, Wolfgang Frey, Wolfgang Kaim, Guangjuan Xu and Michael R. Buchmeiser

      Version of Record online: 24 SEP 2013 | DOI: 10.1002/ejic.201301048

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      Three novel complexes, RuX2(IMesH2)[N,N-diethyl-N′-(2-benzylidene)triazene] [IMesH2 = 1,3-dimesitylimidazolin-2-ylidene; X = Cl (2), CF3COO (3), C6F5COO (4)] are used in the UV-induced ring-opening metathesis polymerization (ROMP) of cis-cyclooctene and dicyclopentadiene. The photoactivity of 24 decreases with increasing electron-withdrawing character and with decreasing pKa of the X groups.

    11. Heterometallic Complexes

      Preparation and Properties of a Series of [Cr2Ln2] Oximato-Bridged Complexes (pages 5469–5475)

      Małgorzata Hołyńska and Maria Korabik

      Version of Record online: 11 SEP 2013 | DOI: 10.1002/ejic.201300658

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      Preparation and properties of a series of new [Cr2Ln2] complexes are reported with phenyl 2-pyridyl ketoxime acting as a ligand and with a new butterfly-like complex core.

    12. Supramolecular Architecture

      Assembly of Silver–Organic Frameworks Containing Trifluoroacetate, Embedded 1,5-Hexadiyne-1,6-diide, and Ancillary Nitrogen-Donor Ligands (pages 5476–5486)

      Ting Hu and Thomas C. W. Mak

      Version of Record online: 17 SEP 2013 | DOI: 10.1002/ejic.201300798

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      Ten new silver–organic frameworks containing trifluoroacetate, 1,5-hexadiyne-1,6-diide (C≡CCH2CH2C≡C, C6H42–), and various types of ancillary N-donors have been assembled with the multinuclear metal–ligand supramolecular synthon C6H4⊂Agn (n = 7, 8, 9), in which the C6H42– ligand has a gauche configuration.

    13. Pd–C Bond Insertions

      Stability and Reactivity of Cyclometallated Naphthylamine Complexes in Pd–C Bond Insertion Reactions with Coordinated Alkynylphosphanes (pages 5487–5494)

      Shuli Chen, Jun Xuan Chiew, Sumod A. Pullarkat, Yongxin Li and Pak-Hing Leung

      Version of Record online: 17 SEP 2013 | DOI: 10.1002/ejic.201300834

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      The asymmetric monoinsertion of PhP(C≡CPh)2 coordinated to a cyclometallated N,N-dimethyl naphthyl/benzylamine template into the Pd–C bonds of N,N-dimethylnaphthylamine palladacycles has been demonstrated for the synthesis of a variety of new P-stereogenic homo- or heterodimetallic complexes.

    14. Multimetallic Amidinates

      Heterobimetallic Metal–Amidinate Complexes by Stepwise Metalation of Methanetrisamidines (pages 5495–5502)

      Benjamin Gutschank, Melike Bayram, Stephan Schulz, Dieter Bläser and Christoph Wölper

      Version of Record online: 19 SEP 2013 | DOI: 10.1002/ejic.201300939

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      Methanetrisamidines can be two- and four-fold metalated by different metal organic complexes to form di- and tetranuclear homometallic complexes, respectively. Moreover, the different acidity of the N–H groups also allows the stepwise deprotonation by different organometallic reagents with the subsequent formation of heterobimetallic complexes.

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