Synthesis, Structure, Spectroscopic Properties, and Hydrolytic Chemistry ofOrganophosphonyl Polyoxotungstates of Formula C6H5P(O)2X(n+)W11O39(8-n)-(Where X(n+) = P(5+),Si(4+))

摘要

The focus of this paper is a new type of early transition metal-oxygen anioncluster (polyoxometalate) derivatized with organic groups, the title compounds, and their structural and solution chemistry. The impetus for this work is 2-fold. First, we wished to provide X-ray crystallographic structural information on the derivatives of the heteropolyundecametalates X(n+)M11O39(12-n)(-), where X(n+) = a transition metal or main group element. To date all X-ray crystallographic structure determinations on these defect (lacunary) complexes and their numerous d-electron transition metal (TM) substituted derivatives have been marginally useful at best, principally as a consequence of high levels (usually 12-fold) of disorder encountered in the solid state.