A new optical supramolecular compound constructed from a polyoxometalate cluster and an organic substrate [(H3O)(C12H10N3)2(PW12O40)] (1) has been synthesized via a hydrothermal reaction and has been structurally characterized by X-ray diffraction. The solid-state diffuse reflectance, IR, and photoluminescence spectra of the title compound indicate that there is an interaction between the alpha-PW12O40 and the organic substrate. The light-yellow title compound shows a certain second-order nonlinear optical response of I(2omega) = 2I(KDP)(2omega).
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Xie et al. (2008) studied this question.