Preparation and characterization of some mixed ligand complexes of platinum(II) |
| |
| Institution: | 1. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China;2. Henan Institute for Durg and Medical Device Inspection, Zhengzhou 450018, China |
| |
| Abstract: | The mixed ligand complexes PtX2(ER3)L and PtXY(ER3)L (where ER3 = PR3 or AsMe3; L = phosphine, arsine; X = Cl; Y = Cl, H or Me) have been prepared and characterized. Reaction of PtMe2(ER3)L with HCl yields PtMeCl(ER3)L, in exclusively one of three possible isomeric forms. Excess tetramethyltin reacts with Pt2Cl2(μ-Cl)2(PMe2Ph)2 giving both cis and trans Pt2(μ-Cl)2(PMe2Ph)2, as identified from the NMR spectra. Cleavage of Pt2(μ-Cl)2Me2(PMe2Ph)2 with donor ligands such as AsPh3, PMe2 or pyridine, was useful as a synthetic route to the unsymmetrical methylchloro PtII derivatives. The reaction of cis-PtMe2(PPh3)(AsPh3)] with excess dimethylacetylenedicarboxylate (DMA) yielded only one product, which was of the formula trans-Pt{C(COOCH3)C(COOCH3)CH3}2(PPh3)(AsPh3)], with the alkenyl groups having the same geometry about the CC bond. The use of diethylacetylene-dicarboxylate (DEA) rather than DMA gave a similar product. However, when cis-PtMe2(PEt3)(AsPh3)] was allowed to react with DMA, two products of the formula trans-Pt{C(COOCH3)C(COOCH3)CH3}2(PEt3)(AsPh3)] were obtained, with the stereochemistry of both alkenyl groups being either cis or trans. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
