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本文报道一种合成标题配合物Pt(diphos)(CO)_2的简便方法及其与碳-卤键的氧化加成反应。在一氧化碳气氛存在下用NaBH_4还原[Pt(diphos)Cl_2]可“原位”得到[Pt(diphos)(CO)_2]的THF溶液,能与卤代烃发生氧化加成反应,并用~1H NMR和~(31)P NMR谱进行了研究。氧化加成反应按自由基非链式机理进行,加成产物[Pt(diphos)X_2]之一[Pt(d(i-Pr)pe)I_2]经过分子结构测定。反应能力与卤代烃和双膦螯合配体的电子性质有关。
In this paper, a simple method for the synthesis of the title complex Pt (diphos) (CO) _2 and its oxidative addition reaction with carbon-halogen bond have been reported. Reduction of [Pt (diphos) Cl_2] with NaBH_4 in the presence of carbon monoxide gives [Pt (diphos) (CO) _2] in THF in situ and undergoes oxidative addition with halogenated hydrocarbons and is characterized by ~ 1H NMR And ~ (31) P NMR spectra were studied. The oxidative addition reaction was carried out according to the free-radical mechanism of free chain. [Pt (d (i-Pr) pe) I_2, an addition product of [Pt (diphos) X_2], was determined by molecular structure. The reactivity is related to the electronic properties of halogenated hydrocarbons and biphosphine chelating ligands.