Tetra - Oxidotetrakis{dioxido[3-(2-pyrid-yl)-1H-pyrazole]molybdenum(VI)}

Abstract

In the title compound, [Mo4O12 (C8H 7N3)4], the MoVI ion has a distorted octa-hedral coordination completed by two terminal O atoms, two -oxide atoms and two N atoms from one 3-(2-pyrid-yl)-1H-pyrazole ligand. It is noteworthy that in the tetranuclear unit ( symmetry), any three MoVI atoms define a plane, and the fourth lies 1.8 (1) Å out of that plane. The degree of linearity of the oxide bridges between two Mo atoms is 175.38 (13)°. Moreover, the N - H group forms an intra-molecular hydrogen bond (four per mol-ecule). © Li et al. 2009.