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Issue 12, 2009
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Pyrazoles and pyrazolides—flexible synthons in self-assembly

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This Perspective summarises the chemistry of the pyrazole ring, and reviews the metal coordination modes adopted by 1H-pyrazoles and their anions. Pyrazolide anions are probably the most versatile ligands in coordination chemistry, with 20 different terminal or bridging coordination modes having been identified so far. Metal cluster compounds supported by pyrazolido ligation are surveyed, concentrating on those reported during the past ten years. Highlights include the wide structural diversity in apparently simple main group pyrazolides; luminescence and charge-transfer complexes in coinage metal pyrazolide clusters; the use of robust metal pyrazolide clusters to construct liquid crystals, supramolecular materials and metal–organic frameworks; and supramolecular complexes formed by pyrazolide-supported metallacrowns.

Graphical abstract: Pyrazoles and pyrazolides—flexible synthons in self-assembly

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The article was received on 08 Sep 2008, accepted on 14 Nov 2008 and first published on 23 Jan 2009

Article type: Perspective
DOI: 10.1039/B815577A
Citation: Dalton Trans., 2009, 2059-2073
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    Pyrazoles and pyrazolides—flexible synthons in self-assembly

    M. A. Halcrow, Dalton Trans., 2009, 2059
    DOI: 10.1039/B815577A

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