摘要:
硫代半咔唑(R1C6H4)C(H)NN(H)C(S)NHR2的抽象处理[R1,R2:4-Me,H(a); 4-Me,Me(b); 4-Me,Et(c); 2-Me,H(d); 2-Me,Me(e); 2-Me,Et(f)]与顺式[PtMe2(cod)]提供四核铂(II)化合物[Pt {((R1C6H3)C(H)NN C(S)NHR2}] 4(1a-1f) C–H活化和NH去质子化后,配体为齿状[C,N,S]。1a-1f与PPh3以1:4 M的比例反应生成单核化合物[Pt {((R1C6H3)C(H)NN C(S)NHR2}(PPh3)](2a-2f)。用大剂量二膦Ph2P(CH2)nPPh2(n = 2,dppe; n = 3,dppp; n = 4,dppb)处理1a-1f得到双核化合物[{Pt [(R1C6H3)C(H)N –N = C(S)NHR2]} 2 {μ-Ph2P(CH2)n