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Issue 6, 2004
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The building block approach to extended solids: 3,5-pyrazoledicarboxylate coordination compounds of increasing dimensionality

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Abstract

A series of M(II) complexes with the ligand 3,5-pyrazoledicarboxylic acid (H3dcp) has been synthesised mainly via hydrothermal reactions and their structures have been characterised. Simple mononuclear [Ni(Hdcp)(H2O)4] (1), Na2(μ-H2O)2(H2O)8[Ni(Hdcp)2(H2O)2] (2), [M(H2dcp)2(H2O)2]·2H2O [M = Co (3), Zn (4) and Cu (5)] and dinuclear (Et3NH)2[Cu2(dcp)2(H2O)2] (9) building blocks have been isolated and subsequently linked into 1-D chains [Mn(Hdcp)(H2O)2] (6), [{Mn(H2O)4}{Mn(Hdcp)2(H2O)2}·4H2O] (7), [Ni2(Hdcp)2(μ-H2O)2(H2O)2] (8), [{Ni(H2O)4}{Ni2(dcp)2(H2O)4}] (11), or 3-D arrays [{Na2(μ-H2O)2}{Cu2(dcp)2}] (10), [Cu3(dcp)2(H2O)4] (12), utilising novel bridging modes of the H3dcp ligand. In the unprecedented 1-D Ni(II) chain 8, rarely reported double aqua-bridges link the Ni(II) ions to form an inter-linked double stranded chain. The magnetic properties of these compounds have been measured and reveal a variety of antiferromagnetic coupling behaviours induced by the ligand bridging modes.

Graphical abstract: The building block approach to extended solids: 3,5-pyrazoledicarboxylate coordination compounds of increasing dimensionality

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Supplementary files

Article information


Submitted
11 Nov 2003
Accepted
23 Jan 2004
First published
24 Feb 2004

Dalton Trans., 2004, 852-861
Article type
Paper

The building block approach to extended solids: 3,5-pyrazoledicarboxylate coordination compounds of increasing dimensionality

P. King, R. Clérac, C. E. Anson and A. K. Powell, Dalton Trans., 2004, 852
DOI: 10.1039/B315067D

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