First amido-functionalized niobium and tantalum complexes of the ansa-structural type: synthesis and photochemical SiN bond cleavage
作者:Wolfgang A. Herrmann、Walter Baratta
DOI:10.1016/0022-328x(95)05929-j
日期:1996.1
Niobium(V) and tantalum(V) amides [η5-C5H4)-Si(CH3)2-NR]M[N(CH3)2]3 (R = C6H5) containing chelate-type C, N-Ligands are available in 45% (M = Nb) and 60% (M = Ta) isolated yield, respectively, from the homoleptic amides M[N(CH3)2]5 and the N-functionalized cyclopentadiene C5H5-Si(CH3)2-NHR by double amine elimination. The niobium and tantalum derivatives undergo an unprecedented photo-induced rearrangement
铌(V)和钽(V)酰胺[ η 5 -C 5 H ^ 4)-Si(CH 3)2 -NR] M [N(CH 3)2 ] 3(R = C 6 H ^ 5)含有螯合物键入ç,ñ -Ligands是在45%(M = Nb)和60%分别(M = Ta)的分离产率,可得,从均配型酰胺M [N(CH 3)2 ] 5和ñ -官能化的环戊二烯ç 5 H 5 -Si(CH 3)2-NHR通过双胺消除。铌和钽的衍生物经历了前所未有的光致重排在室温下,得到的亚氨配合物[ η 5 -C 5 H ^ 4)-Si(CH 3)2 -N(CH 3)2 ] M(= NR)[ SiN键断裂的结果是N(CH 3)2 ] 2。