Thermodynamic and Kinetic Studies on Novel Dinuclear Platinum(II) Complexes Containing Bidentate<i>N</i>,<i>N</i>-donor ligands
作者:Stephanie Hochreuther、Ralph Puchta、Rudi van Eldik
DOI:10.1021/ic201151h
日期:2011.9.19
A series of novel dinuclear platinum(II) complexes were synthesized with bidentate nitrogen donor ligands. The two platinum centers are connected by an aliphatic chain of variable length. The selected chelating ligand system should stabilize the complex toward decomposition. The pKa values and reactivity of four synthesized complexes, viz. [Pt2(N1,N4-bis(2-pyridylmethyl)-1,4-butanediamine)(OH2)4]4+
一系列新的双核铂(II)配合物与双齿氮供体配体合成。两个铂中心通过可变长度的脂族链连接。所选的螯合配体体系应使复合物稳定而不会分解。四种合成的配合物的p K a值和反应性,即。[Pt 2(N 1,N 4-双(2-吡啶基甲基)-1,4-丁二胺)(OH 2)4 ] 4+(4NNpy),[Pt 2(N 1,N 6-双(2-吡啶基甲基)-1 )-1,6-己二胺)(OH 2)4 ] 4+(6NNpy),[Pt 2(N 1,N 8-双(2-吡啶基甲基)-1,8-辛二胺)(OH 2)4 ] 4+(8NNpy)和[Pt 2(N 1,N 10-双(2-吡啶基甲基)-1,10-癸二胺)(OH 2)4 ] 4+(10NNpy),进行了调查。该系统具有特殊的意义,因为对双核铂络合物的取代行为知之甚少,双核铂络合物含有形成脂族桥联配体一部分的双齿螯合物。用分光光度法酸碱滴定法测定配位水配体的p K a值。使用停止流