Abstract
A new [P2W16O59]12− ({P2W16})-based polyoxometalate (POM) derivative (TMA)10H5[Ce3(H2O)6(P2W16O59)2]⋅41H2O (1) (TMA = tetramethyleneamine) was successfully synthesized, which has been characterized by single crystal X-ray diffraction analysis, elemental analyses, cyclic voltammetry, thermogravimetric analyses (TGA), IR spectroscopy and 31P NMR spectroscopy. The single crystal X-ray diffraction analyses indicate that polyanion of 1 consists of two divacant {P2W16} units connected by one standard isosceles triangle {Ce3} bridging cluster via CeOW and CeOP linkages. The investigation of 31P NMR spectroscopy shows the presence of two types of phosphorus in compound 1. The study of magnetic susceptibility for 1 reveals the strong spin-orbital coupling and weak antiferromagnetic interactions exist in the three Ce3+ ions. The photoluminescence study indicates that the presence of 5d → 4f electron transition of Ce3+ ion in 1.
Published Version
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