Chemistry - A European Journal

Cover image for Vol. 21 Issue 32

Editor: Neville Compton, Deputy Editors: Anne Deveson, Elisabeth Roedern

Impact Factor: 5.731

ISI Journal Citation Reports © Ranking: 2014: 22/157 (Chemistry Multidisciplinary)

Online ISSN: 1521-3765

Associated Title(s): Angewandte Chemie International Edition, Chemistry – An Asian Journal, ChemistryOpen, ChemBioChem, ChemCatChem, ChemElectroChem, ChemMedChem, ChemPhysChem, ChemPlusChem, ChemSusChem, European Journal of Inorganic Chemistry, European Journal of Organic Chemistry

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Recently Published Articles

  1. Involucratustones A–C: Unprecedented Sesquiterpene Dimers Containing Multiple Contiguous Quaternary Carbons from Stahlianthus involucratus

    Qiang-Ming Li, Prof. Dr. Jian-Guang Luo, Yang-Mei Zhang, Zhong-Rui Li, Dr. Xiao-Bing Wang, Dr. Ming-Hua Yang, Dr. Jun Luo, Prof. Dr. Hong-Bin Sun, Prof. Dr. Yi-Jun Chen and Prof. Dr. Ling-Yi Kong

    Article first published online: 29 JUL 2015 | DOI: 10.1002/chem.201502631

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    Involucratustones A–C (1–3), unprecedented cadinane dimers containing astounding multiple contiguous quaternary carbons, were isolated from the rhizomes of Stahlianthus involucratus. Compounds 1 and 2 represent the first example of the rare fully substituted 1-oxaspiro[4.4]nonane ring in natural products, and compound 3 possesses the first seco-cadinane-dimer carbon skeleton. Compounds 13 exhibited potent cytotoxic or anti-inflammatory activities.

  2. Effect of the Ancillary Ligands on the Spectral Properties and G-Quadruplexes DNA Binding Behavior: A Combined Experimental and Theoretical Study

    Dr. Shuo Shi, Xing Gao, Hailiang Huang, Juan Zhao and Prof. Tianming Yao

    Article first published online: 29 JUL 2015 | DOI: 10.1002/chem.201501830

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    Unique luminesce: A combined experimental and theoretical study indicated that ancillary ligands significantly affect the spectral properties and the overall G-quadruplex DNA binding behavior of ruthenium(II) complexes (see figure).

  3. Borohydride Ionic Liquids as Hypergolic Fuels: A Quest for Improved Stability

    Deepak Chand, Dr. Jiaheng Zhang and Prof. Dr. Jean'ne M Shreeve

    Article first published online: 29 JUL 2015 | DOI: 10.1002/chem.201502059

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    Borohydride ionic liquids were synthesized using an efficient synthetic pathway which does not require ammonia and halide precursors. An ignition delay time as short as 3 ms was obtained. The hydrolytic stability of tetrahydroborate compounds was improved by employing long-chain alkyl groups bonded to an imidazolium cation. Long-chain alkyls decrease acidity of the C2 proton of the imidazolium cation, improving overall stability of borohydride compounds.

  4. From para-Benziporphyrin to Rhodium(III) 21-Carbaporphyrins: Imprinting Rh⋅⋅⋅η2-CC, Rh⋅⋅⋅η2-CO, and Rh⋅⋅⋅η2-CH Coordination Motifs

    Aneta Idec, Dr. Ludmiła Szterenberg and Prof. Lechosław Latos-Grażyński

    Article first published online: 29 JUL 2015 | DOI: 10.1002/chem.201501996

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    A playground for exploration: Rhodium(III) para-benziporphyrin undergoes a rhodium(III)-stimulated contraction to afford rhodium(III) μ-methylenecarbaporphyrin and subsequently rhodium(III) 21-oxy-21-carbaporphyrin (see figure). The intermolecular collaboration between the rhodium center and the macrocyclic environment facilitated stabilization of the rhodacyclopropane architecture. The reversible methyl–methylene–hydride transformation provides a snapshot of a selective and reversible C[BOND]H bond elimination.

  5. A New Conformation With an Extraordinarily Long, 3.04 Å Two-Electron, Six-Center Bond Observed for the π-[TCNE]22− Dimer in [NMe4]2[TCNE]2 (TCNE=Tetracyanoethylene)

    Adora G. Graham, Dr. Fernando Mota, Dr. Endrit Shurdha, Prof. Arnold L. Rheingold, Prof. Juan J. Novoa and Prof. Joel S. Miller

    Article first published online: 29 JUL 2015 | DOI: 10.1002/chem.201501963

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    C2or­ D2h? That is the question: The C2 conformation of π-[TCNE]22− observed in [NMe4]2[TCNE] (see figure) differs significantly from the eclipsed, D2h conformation reported for about 30 other cations. The C2 conformation is computed to be 1.3 kcal mol−1 less stable than the D2h conformation, and both conformations are minima in their potential energy surfaces.