超分子化合物[Co(H_2biim)_3](HPMo)_(12)O_(40))·12H_2O的水热合成与晶体结构

Hydrothermal Synthesis and Crystal Structure of a Polyoxometalate [Co(H_2biim)_3](HPMo_(12)O_(40))·12H_2O

利用水热技术合成了一种新型超分子化合物[Co(H2biim)3](HPMo12O40)·12H2O。该化合物属于三方晶系,R-3c空间群,晶胞参数a=b=1.2657(5)nm,c=6.0149(5)nm,α=β=90.000(5)°,γ=120.000(5)°,V=8.345(5)nm3,Z=12,R1=0.0606,ωR2=0.1550。该化合物是由[Co(H2biim)3]2+配合物片段和Keggin簇{PMo12O40}组成,它们和水分子之间通过氢键作用最终形成三维超分子结构。

A new supramolecular compound,[Co（H2biim）3] （H PMo12O40） · 12H2O（H2biim = 2,2 -biimidazole）, has been synthe-sized by hydrothermal techniques. It crystallizes in the trigonal system, space group R-3c, a = b = 1.2657（5） nm, c = 6.0149（5） nm, α=β=90.000（5）°,γ=120.000（5）°,V=8.345（5）nm3,Z=12,R1=0.0606,COR2=0.1550. The compound consists of iso-lated complexes fragments [Co （H2biim）3]^2＋ and Keggin clusters {PMo12O40}, which are linked with water moleeules through hydro-gen-bonding interactions to form three-dimensional supramolecular structure.