Unique stepwise substitution reaction of a mono(guanidinate)tetraplatinum complex with amidines, giving mono(amidinate)tetraplatinum complexes through mixed-ligand intermediate complexes
作者:Shinji Tanaka、Kazushi Mashima
DOI:10.1039/c2dt32136j
日期:——
complex [Pt4(μ-OCOCH3)7(μ-(TolN)2CNiPr2)] (5: Tol = C6H4Me-4) was prepared by treating [Pt4(μ-OCOCH3)8] (1) with excess amounts of N,N′-bis(p-tolyl)-N′′-diisopropylguanidine (4a). A substitution reaction of the guanidinate moiety of 5 with N,N′-bis(aryl)formamidine (10: aryl = C6H4Me-4, C6H4COMe-4, and C6H4OMe-4) via mixed-ligand intermediates, trans-[Pt4(μ-OCOCH3)6(μ-(TolN)2CNiPr2)(μ-ArNCHNAr)] (11:
单(胍基)tetraplatinum复杂[PT 4(μ-OCOCH 3)7(μ-(TOLN)2 CN我镨2)](5:托尔= C 6 H ^ 4 ME-4),通过处理制备的Pt 4(μ-OCOCH 3)8 ](1)用过量的量的N,N-双(p -甲苯基) - ñ ''-diisopropylguanidine(图4a)。5的胍基部分与N,N′-双(芳基)甲am的取代反应(10:芳基= C 6ħ 4 ME-4,C 6 H ^ 4来-4和C 6 H ^ 4 OME-4)通过混合配体的中间体,反式- [PT 4(μ-OCOCH 3)6(μ-(TOLN)2 CN我Pr 2)(μ-ArNCHNAr)](11:Tol = C 6 H 4 Me-4; Ar = C 6 H 4 Me-4,C 6 H 4 COMe-4和C 6 H 4OME-4),作为一个循序渐进的替代机构,得到相应的单(脒基)tetraplatinum络合物[PT