名称:
Synthesis of dimethylplatinum(IV) compounds, [{PtMe2X2}n], [{PtMe2XY}n], and, in solution, fac-[PtMe2X(H2O)3]+, where X and Y are anionic ligands
摘要:
X2(X = Cl、Br、I)与顺式-[PtMe2L2](L = 吡啶,py,或L2 = N,N,N',N'-四甲基乙二胺(tmen))发生氧化加成反应,得到[PtMe2X2L2]。对于X = Br、I,用含水HClO4处理得到不溶的[{PtMe2X2}n],但对于X = Cl,[PtMe2Cl2(H2O)2]仍保持在溶液中,而[{PtMe2Cl2}n]只在浓缩溶液中沉淀。[PtMe2L2](L = py,1/2(tmen))与水反应得到[PtMe2(OH)2L2],经HClO4处理后在溶液中得到顺式-[PtMe2(H2O)4](ClO4)2。水还与[PtMe2(nbd)](nbd = 双环戊二烯)反应,得到[{PtMe2](OH)2}n]•mH2O。醇ROH(R = Me,Et)与顺式-[PtMe2py2]反应得到[PtMe2(OR)(OH)py2],再与含水HClO4的溶液反应得到溶液中的fac-[PtMe2(OR)(H2O)3]ClO4。向该溶液中加入氯化物会导致[{PtMe2(OR)Cl}n]的沉淀。[{PtMe2XY}n]与水中的AgNO3反应得到溶液中的fac-[PtMe2X(H2O)3](NO3)(X = Y = Cl、Br、I或Y = Cl,X = OR);对于X = I,需要添加酸以防止[{PtMe2I(OH)}n]的沉淀。fac-[PtMe2Br(H2O)3](NO3)的溶液与AgNO2反应得到fac-[PtMe2(NO2)(H2O)3](NO3),但与AgSCN的类似反应只得到低收率的fac-[PtMe2(SCN)(H2O)3](NO3)复合物。关键词:铂,甲基,吡啶,水合物,烷氧基,氧化加成,核磁共振。