Pincer “Hemilabile” Effect. PCN Platinum(II) Complexes with Different Amine “Arm Length”
作者:Elena Poverenov、Mark Gandelman、Linda J. W. Shimon、Haim Rozenberg、Yehoshoa Ben-David、David Milstein
DOI:10.1021/om049182m
日期:2005.3.1
C6H4[CH2P(tBu)2](CH2)2N(CH3)2 (1), which forms complexes bearing a six-membered amine chelate and a five-membered phosphine chelate, was compared with that of the new “normal” PCN ligand C6H4[CH2P(tBu)2](CH2)N(CH2CH3)2 (2), which leads to formation of complexes bearing two five-membered chelates. The chloride complexes (PCN)PtCl (3, 4) and the unsaturated cationic complexes [(PCN)Pt]+X- (X = BF4, OTf) (5, 6,
“长臂” PCN型钳形配体C 6 H 4 [CH 2 P(tBu)2 ](CH 2)2 N(CH 3)2(1)的反应活性,形成带有六元胺的配合物螯合物和五元膦螯合物与新的“正常” PCN配体C 6 H 4 [CH 2 P(tBu)2 ](CH 2)N(CH 2 CH 3)2(2),导致形成带有两个五元螯合物的络合物。氯化物复合物(PCN)氯铂酸(3,4)和不饱和阳离子络合物[(PCN)的Pt] + X -(X = BF 4,OTF)(5,6,7),同时基于PCN配体,制备并用不同的试剂反应,得到浅绿色,[(PCN- 1)的Pt(H 2 O)] + BF 4 - (10); 羟基,(PCN- 1)Pt(OH)(11); 羰基[(PCN)的Pt(CO)] + BF 4 - (8,9); 和氢化物,(PCN- 1)PtH(16)配合物。复合物的结构4,6,8,10,11,和12分别通过X射线晶体