(IUCr) Crystallography Journals Online

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Acta Cryst. (2009). E65, m1074 [ doi:10.1107/S1600536809031717 ]

Tetra--oxido-tetrakis{dioxido[3-(2-pyridyl)-1H-pyrazole]molybdenum(VI)}

D. Li, Y. Liu, P. Wei, B. Hu and X. Zhang

Abstract: In the title compound, [Mo₄O₁₂(C₈H₇N₃)₄], the Mo^VI ion has a distorted octahedral coordination completed by two terminal O atoms, two [mu] -oxide atoms and two N atoms from one 3-(2-pyridyl)-1H-pyrazole ligand. It is noteworthy that in the tetranuclear unit ( $\\overline4$ symmetry), any three Mo^VI 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 intramolecular hydrogen bond (four per molecule).

Online 15 August 2009