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

    Thumbnail image of graphical abstract

    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

    Thumbnail image of graphical abstract

    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

    Thumbnail image of graphical abstract

    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.

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