Crystal structure of (2,2'-bi-pyridine-κ(2)N,N')-trans-bis-(tert-butyl-dimethyl-sil-yloxy)-cis-dioxidomolybdenum(VI)

In the title compound, [( (t) BuSiMe(2)O)(2)MoO(2)(2,2'-bi-pyridine)] or [Mo(C(6)H(15)OSi)(2)O(2)(C(10)H(8)N(2))], the Mo(VI) atom has a distorted octa-hedral environment with the sil-oxy substituents occupying the trans positions. The complex contains a rare (R(3)SiO)(2)MO(2) (M = Mo, W) structural motif and was formed in a reaction between sodium molybdate and tert-butyl-dimethyl-silyl chloride in the presence of 2,2-bi-pyridine. In the crystal, neighbouring mol-ecules are linked by C-H⋯O=Mo hydrogen bonds, forming chains propagating along the a-axis direction.