An octanuclear alkoxy-polyoxomolybdate. The crystal and molecular structure of [(n-C4H9)4N]2[Mo8O20(OMe)4{MeC(CH2O)3}2]

Abstract

Reaction of [(n-C₄H₉)₄N]₂[Mo₂O₇] with 2-hydroxymethyl-2-methylpropane-1,3-diol yields [(C₄H₉)₄N]₂[Mo₈O₂₀(OMe)₄{MeC(MeO)₃}₂](1), an alkoxypolyoxomolybdate consisting of two tetranuclear [Mo₄O₁₀(OMe)₂{MeC(CH₂O)₃]^– moieties, composed of edge-sharing MoO₆ octahedra, which are connected via two corner-sharing interactions through bridging oxo-groups; thermal degradation of (1) yields dimethyl ether, formaldehyde, methanol, and water as gaseous products.