PbCl2 reacted with the triphospholyl ring anion [P3C2But2]– to afford the hexaphospha-plumbocene [Pb(η5-P3C2But2)2] 3 which has been characterised by multinuclear NMR spectroscopy. In contrast the reaction between PbCl2 and the diphosphastibolyl ring anion [P2SbC2But2]– led to the organo-antimony cage compound [P4Sb2C4But4] 4via an oxidative coupling route. Both the heteroleptic plumbocenes [Pb(η5-EP2C2But2)(η5-C5Me5)] (E = P 5, E = Sb 6) could be prepared by treatment of the corresponding hetero-ring anion with a mixture of PbCl2 and Li(C5Me5) (for 5) or the half sandwich complex [Pb(η5-C5Me5)Cl] (for 6). Both complexes were characterised by multinuclear NMR spectroscopy and single crystal X-ray diffraction studies. The novel, structurally characterised, hetero-bimetallic complex [Pb(η5-P3C2But2)(µ-Cl)2Li(tmen)2] 7 could be synthesised by carrying out the reaction of PbCl2 with [Li(dme)3][P3C2But2] in tmen rather than dme. This compound was found to be highly fluxional in solution even at low temperature.
PbCl2与三
磷杂茂环阴离子[P3C2But2]–反应,得到了六
磷杂
铅茂[Pb(η5-P3C2But2)2] 3,该化合物已通过多核NMR光谱进行了表征。相比之下,PbCl2与
二膦锑茂环阴离子[P2SbC2But2]–反应,通过氧化偶联路线得到了有机
锑笼合物[P4Sb2C4But4] 4。通过处理相应的杂环阴离子与PbCl2和Li(C5Me5)(对于5)或半夹心配合物[Pb(η5-C5Me5)Cl](对于6)的混合物,可以制备两种异配位
铅茂[Pb(η5-EP2C2But2)(η5-C5Me5)](E = P 5,E = Sb 6)。这两种配合物均通过多核NMR光谱和单晶X射线衍射研究进行了表征。通过在tmen而非dme中进行PbCl2与[Li(dme)3][P3C2But2]的反应,可以合成新型、结构表征的杂双
金属配合物[Pb(η5-P3C2But2)(µ-Cl)2Li(tmen)2] 7。该化合物在溶液中甚至在低温下都表现出高度流动性。