Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 12 (December 2012)

metal-organic compounds

Acta Cryst. (2012). E68, m1472-m1473    [ doi:10.1107/S1600536812045217 ]

[Aqua­bis­(nitrato-[kappa]O)copper(II)]-[mu]-{bis­[5-methyl-3-(pyridin-2-yl)-1H-pyrazol-4-yl]selenide}-[diaqua­(nitrato-[kappa]O)copper(II)] nitrate monohydrate

M. Seredyuk, V. A. Pavlenko, E. Gumienna-Kontecka and T. S. Iskenderov

Abstract: In the title binuclear complex, [Cu2(NO3)3(C18H16N6Se)(H2O)3]NO3·H2O, the CuII ions are penta­coordinated in a tetra­gonal-pyramidal geometry. In both cases, the equatorial planes are formed by a chelating pyrazole-pyridine group, a water mol­ecule and a nitrate O atom, whereas the apical positions are occupied by a water mol­ecule for one CuII ion and a nitrate O atom for the other. The organic selenide ligand adopts a trans configuration with respect to the C-Se-C plane. Numerous inter­molecular O-H...O and N-H...O hydrogen bonds between the coordinating and lattice water mol­ecules, nitrate anions and pyrazole groups are observed. [pi]-[pi] stacking inter­actions between the pyridine rings [averaged centroid-centroid distance = 3.652 (5) Å] are also present. The lattice water molecule is equally disordered over two sets of sites.

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