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Hexaaquanickel(II) bis[2-carboxylato-2-(isothiouronium-S-ylmethyl)propane-1,3-diyl phosphate] hexahydrate.

Authors
Type
Published Article
Journal
Acta Crystallographica Section C Crystal Structure Communications
1600-5759
Publisher
International Union of Crystallography
Publication Date
Volume
64
Issue
Pt 5
Identifiers
DOI: 10.1107/S0108270108007956
PMID: 18451473
Source
Medline
License
Unknown

Abstract

In the title complex, [Ni(H(2)O)(6)](C(6)H(10)N(2)O(6)PS)(2) x 6 H(2)O, the asymmetric unit consists of one-half of an Ni atom (which lies on an inversion centre) with three coordinated water molecules, one complete 2-carboxylato-2-(isothiouronium-S-ylmethyl)propane-1,3-diyl phosphate anion and three noncoordinated water molecules. The hexaaquanickel(II) cations have distorted octahedral coordination and are connected via water chains to form two-dimensional supramolecular networks parallel to the ab plane. The phosphate ester anion is linked via N-H...O and O-H...O hydrogen bonds, thus creating various ring, dimer and chain hydrogen-bonding patterns, and building up a second two-dimensional supramolecular network parallel to the ab plane. The crystal structure is further stabilized by an intra- and interlayer hydrogen-bond network. This work illustrates that a carboxylate with a caged phosphate ester can open its ring in the presence of dichloridotetrakis(thiourea)nickel, and the resulting polyfunctional anion can be used for constructing a complex hydrogen-bonding scheme.

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