Thermal analysis of coordination compounds. Part 3. Thermal decomposition of platinum complexes containing triphenylphosphine, triphenylarsine and triphenylstibine
作者:Roberto Santos Barbieri、C.R. Bellato、A.C. Massabni
DOI:10.1016/0040-6031(94)02242-g
日期:1995.8
[PtCl2(SbPh3)2]. Thermal stabilities of each of the complexes are compared with those of the others in the series. Mechanisms of thermal decomposition of complexes of the types [PtCl2L2] and [PtLn] are proposed. Residues of the samples were characterized by chemical tests and IR spectroscopy. The residue from the thermal decomposition of [PtCl2L2] (L is PPh3, AsPh3) and [Pt(PPh3)4] is metallic platinum. For [Pt(AsPh3)4]
摘要 通过热重分析 (TG) 和差热分析 (DTA) 研究 [PtCl2L2] (L 为 PPh3, AsPh3, SbPh3), [PtLn] (n = 3, L 为 SbPh3; n = 4, L 为 PPh3 , AsPh3); [(PtL3)2N2]; 描述了[(PtL3)2C2]和[Pt(CO)2L2](L是SbPh3)。TG 和 DTA 曲线分析表明 [PtCl2L2] 型 Pt(II) 配合物比 [PtLn] 型相应 Pt(0) 配合物具有更高的热稳定性,[Pt(SbPh3)3 除外],比 [PtCl2(SbPh3)2] 更稳定。将每个配合物的热稳定性与系列中其他配合物的热稳定性进行比较。提出了 [PtCl2L2] 和 [PtLn] 类型配合物的热分解机制。样品的残留物通过化学测试和红外光谱表征。[PtCl2L2](L 是 PPh3、AsPh3)和 [Pt(PPh3)4] 的热分解残留物是金属铂。对于