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Abstract
Two new CuI(4,5-diazafluoren-9-one)2-modified compounds based on Keggin anion and its bicapped bisupporting derivative, [Cu(DF)2]3[PMo12O40] (1), [Cu(DF)2]2[{PMo12O40(VO)2}{Cu(DF)2}2] (2) (DF = 4,5-diazafluoren-9-one), have been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectra, thermogravimetric analyses, and cyclic voltammetry. In 1, the layer consisting of two-coordinate CuI complexes arranges alternatively with the other layer consisting of three-coordinate CuI complexes. Strong aryl packing interactions between these layers construct a stable supramolecular metal-organic framework with 1D channels, which can accommodate the anions. In 2, the anion is a reduced bivanadyl capped α-Keggin polymolybdate anion, covalently bonded to two [Cu(DF)2]+ groups. Chains consisting of [{PMo12O40(VO)2}{Cu(DF)2}2]2− arrange alternatively with chains consisting of discrete CuI complexes. The electrochemical behaviors of carbon paste electrodes for 1 and 2 have been studied in detail.
Acknowledgment
This work was financially supported by the Doctoral Research Fund for Hebei Higher Learning Institutions (05547004D-1).