两个半夹心型聚吡唑硼酸盐羧酸钴配合物的合成、结构及催化活性

Syntheses,Structures and Properties of Two Half-sandwich Cobalt Carboxylate Complexes with Tris(pyrazolyl)borate Ligand

设计合成了2个结构新颖的半夹心单核聚吡唑硼酸盐羧酸配合物Tp*Co(Hglu)(CH3OH)(1)和Tp*Co(Hsub)(H2O)(2)[Tp*=三聚(3,5-二甲基吡唑)硼酸根,H2glu=戊二酸,H2sub=辛二酸],并通过元素分析、红外光谱、紫外-可见光谱和X射线单晶结构分析对标题配合物进行了表征.结构分析表明,在配合物1和2中,配体Tp*都是三齿配位,配位模式相同;戊二酸和辛二酸都以μ1-η1-η1的端基配位模式与金属相连.此外,还对配合物的热稳定性进行了详细分析,并初步探讨了配合物催化氧化环己烷的催化活性.

Two new mononuclear complexes Tp＊ Co （Hglu） （CH3OH） （ 1 ） and Tp＊ Co （Hsub） （H20） （2） [ Tp = hydrotris （3,5-dimethylpyrazolyl） borate, H2 glu = glutaric acid, H2 sub = suberic acid ] have been syn- thesized successfully. The complexes were characterized by elemental analysis, IR, UV-Vis spectroscopy and single-crystal X-ray diffraction. Structural analysis reveals that in complexes 1 and 2, the coordination mode of the ligand Tp＊ is terminal tridentate chelated coordination mode. While the glutaric or suberic acid ligand adopt a/xz-r/1-r/1 linking fashion. In addition, the thermal stability and the activity in catalytic oxidation of cyclohexane have been discussed.