Monophosphite coordination and hydrolysis by Pt(II) bearing 1,1'-bis(di(o-methoxyphenyl)phosphanyl)ferrocene

Neutral and bis-cationic platinum(II) complexes, which bear the chelating ligand 1,1?-bis(di(o-methoxyphenyl)phopsphanyl)ferrocene have been employed to mono-coordinate different tertiary phosphites. The coordination mode of the "in situ" obtained compounds as well as the influence of the nature of the counter-anion mainly on the 1JPtP (phosphite) was proved by 31P{1H} NMR spectroscopy. The stability of the obtained compounds in the presence of excess phosphite as well as under real phosphite hydrolysis reaction conditions conducted under neutral conditions has been studied spectroscopically. In order to corroborate the role of the o-methoxy substituents of the title ligand in phosphite coordination, analogous reactions were carried out with 1,1'-bis(diphenylphosphanyl)ferrocene and studied by 31P{1H} NMR spectroscopy.