Synthesis and Characterization of a Novel Organic-Inorganic Hybrid Compound Ni（DMF）₆₃PMo （12）O （40）₂

The title compound Ni（DMF）₆₃PMo 12O 40₂ （DMF=N,N′-dimethyllformamide） was synthesized and structurally characterized by elemental analysis, IR, UV and single crystal X-ray diffraction. It crystallized in the trigonal system, space group R-3, a=1.591?7（2） nm, b=1.591?7（2） nm, c=3.226?9（7） nm, α=90.00°, β=90.00 °, γ=120.00°, V=7.080（2） nm3, Z=3 and R₁=0.083?7. It consists of two Keggin polyoxometalates PMo 12O 40 3- linked together with three Ni（DMF）₆ 2+ cations through hydrogen bonding interaction.