Bis(2,2′-bipyridine N-oxide-κ2O,N)-copper(II) β-octamolybdate

The title compound, bis-(2,2′-bipyridine N-oxide-κ2 N,O)hexa-cosa-oxocopper(II)molybdenum(IV), [Cu2Mo8O26(C10H8N2O)4], was obtained by a hydro-thermal reaction. The Cu atom is coordinated by two O atoms and two N atoms from two 2,2′-bipyridine N-oxide (L) ligands and one terminal O atom from one [Β-Mo8O26]4- cluster with a square-pyramidal coordination geometry; the apical Cu - O bond distance is significantly longer than Cu - O bond distances in the basal plane. Two terminal O atoms of the (Β-Mo8O26)4- cluster link two [Cu(L)2]2+ units, forming a centrosymmetric dimer. © 2007 International Union of Crystallography. All rights reserved.