Research Article: Tetra­aqua­bis(1,10-phenanthroline)bis­[μ2-1H-pyrazole-3,5-dicarboxyl­ato(3−)]tricopper(II) dihydrate

Date Published: May 01, 2010

Publisher: International Union of Crystallography

Author(s): Zhi-Gang Li, Shao-Ai Li, De-Quan Liu, Long He, Jing-Wei Xu.

http://doi.org/10.1107/S1600536810012833

Abstract

The title compound, [Cu3(C5HN2O4)2(C12H8N2)2(H2O)4]·2H2O, is a trinuclear copper(II) complex in which two centrosymmetrically related pyrazole-3,5-dicarboxyl­ate(3−) and 1,10-phenanthroline ligands bind three CuII atoms, with one CuII atom located on a center of symmetry. In each complex, there are four coordinated water mol­ecules and two solvent water mol­ecules, which participate in extensive hydrogen-bond patterns. These inter­actions, as well as π–π inter­actions between neighbouring 1,10-phenanthroline ligands [shortest atom-to-atom distance = 3.363 (3) Å], extend the crystal structure into a three-dimensional supra­molecular network.

Partial Text

For the potential applications of novel coordination architectures as new classes of materials, see: Kitagawa et al. (2004 ▶). The potential coordination sites of 3,5-pyrazoledicarboxylate are highly accessible to metal ions, see: Li (2005 ▶). However, divalent copper ions have rarely been coordinated with 3,5-pyrazoledicarboxylic acid at ambient temperature, see: King et al. (2003 ▶).

Source:

http://doi.org/10.1107/S1600536810012833