叔丁基亚胺四氯合钽(Ⅴ)阴离子配合物[IPrH]^+[~tBuN=TaCl_4(py)]^-的合成与表征

Synthesis and Characterization of Tert-butylimido Tetra-chloro Tantalum(Ⅴ) Anion Complex [IPrH]^+[~tBuN=TaCl_4(py)]^-

[tBuN=TaCl3(py)2]和氮杂环卡宾(IPr=1,3-bis(2,6-diisoproylphenyl)imidazol-2-ylidene)的反应得到预料之外的叔丁基亚胺四氯合钽髨阴离子配合物[IPrH]+[tBuN=TaCl4(py)]-(1)。利用核磁共振波谱,红外吸收光谱,荧光光谱,元素分析和X-Ray单晶衍射对配合物1的结构进行了表征。X-射线单晶衍射分析表明,Ta(V)中心与4个氯和2个分别来自亚胺和吡啶配体的氮原子以八面体构型配位。

[IPrH]＋[tBuN=TaC14（py）]- （1） （IPr=1,3-bis（2,6-diisoproylphenyl）imidazol-2-ylidene） was obtained unexpe- etedly by the reaction of ＇BuN=TaC13（py）2 and IPr. Complex 1 was structurally eharaeterized by NMR, IR, fluores- cence speetra, elemental analysis and single-crystal X-ray diffraction. The erystal structure of 1 shows that the Ta（V） center is octahedrally eoordinated by four chlorides and two nitrogen atoms from imido and pyridyl ligands, respectively. CCDC： 873803.