Synthesis, crystal structure and properties of a charge-transfer compound [(CH3)3CNH3]3[PMo12O40] • 2H2O

A charge-transfer compound [(CH3)(3)CNH3](3)[PMo12O40] (.) 2H(2)O was synthesized and characterized by IR, UV, ESR, diffusion reflectance electronic spectrum, cyclic voltammogram and X-ray crystallography. Oxygen atoms of the polyoxometalate anion, N atoms of organic substrates (CH3)(3)CNH2 and O atoms of water molecules are involved in hydrogen bonding. The solid reflectance electronic spectra and IR data indicate the presence of interaction between the [PMo12O40](3)) and the organic substrates in the solid state. Photosensitivity to ultraviolet light was assessed for the compound, showing that charge-transfer resulted from oxidation of the organic substrates and the reduction of the heteropolyanion.