cis-hydride and p-tolyl ligands, is resistant to reductive elimination of toluene. Osmium(0) complexes containing P(NC4H4)3 are conveniently prepared by replacement of one PPh3 ligand from Os(CO)(CE)(PPh3)3 (E=O, S) to give Os(CO)(CE)[P(NC4H4)3](PPh3)2 (4, E=O; 5, E=S). Structure determination of 4 confirms a trigonal bipyramidal geometry with the PPh3 ligands in the axial positions and the π-accepting P(NC4H4)3
OSHCl(CO)(PPh 3)3与强大的π受体
配体三(N-
吡咯基)膦P(NC 4 H 4)3反应,将PPh 3
配体反式取代为
氢化物,得到
OSHCl(CO )[P(NC 4 H 4)3 ](PPh 3)2(1)。Cl与1的类似物被
对甲苯基,
OSH(
对甲苯基)(CO)[P(NC 4 H 4)3 ](PPh 3)2取代(3),是
OS(的热
脱羧访问p -
甲苯基)(η 2 -O 2 CH)(CO)(PPH 3)2(2在P(NC的存在下)4 ħ 4)3。尽管具有顺式-
氢化物和对-
甲苯基
配体,但是配合物3对
甲苯的还原消除具有抗性。通过从
OS(CO)(CE)(PPh 3)3取代一种PPh 3
配体,可以方便地制备含有P(NC 4 H 4)3的s(0)配合物。(E = O,S)得到
OS(CO)(CE)[P(NC 4 H 4)3 ](PPh 3)2(4,E = O;5,E = S)。4的结构确定确认了一个三角