Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 40

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPhotoChem, ChemPlusChem, Zeitschrift für Chemie

47_47/2008Cover Picture: Molecular Cut-Outs of Mo/Zn Hume–Rothery Phases: Synthesis and Structure of [{Mo(CO)4}4(Zn)6(μ-ZnCp*)4] / Twelve One-Electron Ligands Coordinating One Metal Center: Structure and Bonding of [Mo(ZnCH3)9(ZnCp*)3] (Angew. Chem. Int. Ed. 47/2008)

Two Zinc(I) to one Gallium(I) is the exchange rate for the synthesis of [Mo(ZnCp*)3(ZnMe3)9] from [Mo(GaCp*)6] and ZnMe2 (Cp*=C5Me5). The equally unusual complex [{Mo(CO)4}4(Zn)6(μ-ZnCp*)4] is formed analogously. As molecular cut-outs of a Mo/Zn alloy phase wrapped into tender ligand shells (depicted as bubbles), these are prototypes of a new class of compounds at the borderline of complexes and clusters, as R. A. Fischer, G. Frenking, and co-workers describe in the Communications on pages 9146 ff. and 9150 ff.

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Also of Interest

PET Labelsfor001

The preparation of radiolabeled molecules for application in positron emission tomography must be quick and simple. P. W. Miller et al. describe in their Review on page 8998 ff. the current strategies for the preparation of radiolabels with the short-lived positron emmiters 11C, 18F, 15O, and 13N.

DNA/RNA Hybridsfor002

The thermodynamic stability of DNA/RNA hybrids having DNA as a substrate and RNA as a template is described by N. Sugimoto et al. in the Communication on page 9034 ff. The destabilization of the hybrids by low-weight molecular substances leads to sliding of the telomerase along the telomeric DNA, and high molecular weight molecules stabilize the hybrid.

Metal(I) Dimersfor003

P. P. Power et al. report, in their Communication on page 9115 ff. on the synthesis and characterization of dimeric metal(I) complexes [ArMMAr] (M=Fe or Co; Ar=C6H3-2,6-(2,6-iPr2C6H3)2), and they note that in contrast to the chromium analogue, these complexes do not feature a quintuple bonded metal species.