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Issue 6, 2010
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Single-crystal to single-crystal transformations in discrete hydrated dimeric copper complexes

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Abstract

The single crystals of discrete hydrated [(OAc)Cu(μ-hep)2Cu(OAc)]·2H2O (1·2H2O) and [(OAc)Cu(μ-hep)2 Cu(OnPr)]·2H2O (2·2H2O) (the lattice H2O molecules exist as a tetrameric water cluster, hep-H = 2-(2-hydroxyethyl)pyridine), OAc = acetate and OnPr = n-propionate) undergo single-crystal to single-crystal (SCSC) transformations to the dehydrated 1 and 2, respectively, under the influence of heat. The reverse SCSC processes of 1/21·2H2O/2·2H2O involving the regeneration of the lattice water tetramers take place on exposure of 1/2 to water vapour. However, the blue single crystal of discrete hydrated [(OnPr)Cu(μ-hep)2Cu(OnPr)]·2H2O (3·2H2O), incorporating the two bulkier OnPr terminal bidentate ligands, irreversibly converts to the green single crystal of a unique discrete tetrameric [Cu43hep)2(μ-hep)2(μ-OnPr)2(OnPr)2] (4) with double open cubane core either by heating or by a simple vapour diffusion technique via the breaking and forming of multiple covalent bonds.

Graphical abstract: Single-crystal to single-crystal transformations in discrete hydrated dimeric copper complexes

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Publication details

The article was received on 09 Sep 2009, accepted on 11 Nov 2009 and first published on 03 Dec 2009


Article type: Communication
DOI: 10.1039/B918761H
Citation: Dalton Trans., 2010,39, 1447-1449
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    Single-crystal to single-crystal transformations in discrete hydrated dimeric copper complexes

    S. M. Mobin, A. K. Srivastava, P. Mathur and G. K. Lahiri, Dalton Trans., 2010, 39, 1447
    DOI: 10.1039/B918761H

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