2-(2′-pyridyl) phosphaferrocenes and analogues: a new type of chelating ligands with planar chirality and π-acceptor phosphorus centres
作者:Bernard Deschamps、Louis Ricard、François Mathey
DOI:10.1016/s0022-328x(97)00052-1
日期:1997.12
affords the 2-(2′ pyridyl)-3,4-dimethylphosphaferrocene (2) in 65% yield. This compound behaves as a π-acceptor-σ-donor P,N-chelating ligand towards W(O) and Cu(I). The W(CO)4 complex 5 has been characterized by X-ray crystal structure analysis. Some strain within the chelate is obvious from the P-W-N angle of 73°. The analogous 2-(8′-quinolyl)-3,4-dimethylphosphaferrocene (10) and 2-(2′-pyridyl)-3,4-d
1-(2'-吡啶基)-3,4-二甲基磷脂与[CpFe(CO)2 ] 2在CO压力下于160°C的反应得到2-(2'吡啶基)-3,4-二甲基磷杂茂铁(2),产率为65%。该化合物表现为对W(O)和Cu(I)的π受体-σ供体P,N螯合配体。W(CO)4络合物5已经通过X射线晶体结构分析表征。从73°的PWN角度来看,螯合物中的某些应变是明显的。还描述了类似的2-(8'-喹啉基)-3,4-二甲基磷二茂铁(10)和2-(2'-吡啶基)-3,4-二甲基磷酰基mantrene(11)。