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Issue 16, 2014
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An unusual linker and an unexpected node: CaCl2 dumbbells linked by proline to form square lattice networks

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Abstract

Four new structures based on CaCl2 and proline are reported, all with an unusual Cl–Ca–Cl moiety. Depending on the stoichiometry and the chirality of the amino acid, this metal dihalide fragment represents the core of a mononuclear Ca complex or may be linked by the carboxylate to form extended structures. A cisoid coordination of the halide atoms at the calcium cation is encountered in a chain polymer. In the 2D structures, CaCl2 dumbbells act as nodes and are crosslinked by either enantiomerically pure or racemic proline to form square lattice nets. Extensive database searches and topology tests prove that this structure type is rare for MCl2 dumbbells in general and unprecedented for Ca compounds.

Graphical abstract: An unusual linker and an unexpected node: CaCl2 dumbbells linked by proline to form square lattice networks

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Publication details

The article was received on 19 Nov 2013, accepted on 23 Jan 2014 and first published on 30 Jan 2014


Article type: Paper
DOI: 10.1039/C3CE42357C
Author version available: Download Author version (PDF)
Citation: CrystEngComm, 2014,16, 3305-3311
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    An unusual linker and an unexpected node: CaCl2 dumbbells linked by proline to form square lattice networks

    K. Lamberts, S. Porsche, B. Hentschel, T. Kuhlen and U. Englert, CrystEngComm, 2014, 16, 3305
    DOI: 10.1039/C3CE42357C

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