Novel Dinuclear Platinum(II) Complexes Containing Mixed Nitrogen–Sulfur Donor Ligands
作者:Stephanie Hochreuther、Ralph Puchta、Rudi van Eldik
DOI:10.1021/ic2018902
日期:2011.12.19
series of novel dinuclear platinum(II) complexes were synthesized containing a mixed nitrogen–sulfur donor bidentate chelate system in which the two platinum centers are connected by an aliphatic chain of variable length. The bidentate chelating ligands were selected to stabilize the complex toward decomposition. The pKa values and reactivity of the four synthesized complexes, namely, [Pt2(S1,S4-bis(2-pyridylmethyl)-1
合成了一系列新颖的双核铂(II)配合物,其中包含氮-硫供体双齿混合螯合物系统,其中两个铂中心通过可变长度的脂族链连接。选择二齿螯合配体以使配合物稳定以免分解。四种合成的配合物[Pt 2(S 1,S 4-双(2-吡啶基甲基)-1,4-丁烷二硫醚)(OH 2)4 ] 4+(4NSpy)的p K a值和反应性, [Pt 2(S 1,S 6-双(2-吡啶基甲基)-1,6-己二硫醚)(OH 2)4 ] 4+(6NSpy),[Pt 2(S 1,S 8-双(2-吡啶基甲基)-1,8-辛二硫醚)( OH 2)4 ] 4+(8NSpy)和[Pt 2(S 1,S 10-双(2-吡啶基甲基)-1,10-癸二硫醚)(OH 2)4 ] 4+(10NSpy),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。此外,根据配体以及双核复合物的细胞毒