Thiosemicarbazone platinacycles with tertiary phosphines. Preparation of novel heterodinuclear platinum–tungsten complexes
作者:Darío Lata、M. Teresa Pereira、Juan M. Ortigueira、Javier Martínez、Brais Bermúdez、Jesús J. Fernández、José M. Vila
DOI:10.1016/j.poly.2012.04.015
日期:2012.6
afforded the tetranuclear platinum(II) compounds [Pt(R1C6H3)C(H) NN C(S)NHR2}]4 (1a–1f) with the ligand as terdentate [C,N,S] after C–H activation and NH deprotonation. The reaction of 1a–1f with PPh3 in 1:4 M ratio gave the mononuclear compounds [Pt(R1C6H3)C(H) NN C(S)NHR2}(PPh3)] (2a–2f). Treatment of 1a–1f with large-bite diphosphines Ph2P(CH2)nPPh2 (n = 2, dppe; n = 3, dppp; n = 4, dppb) afforded the
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