111188-10-4Relevant academic research and scientific papers
Synthesis of Chelate Stabilised Alcohol- and Alkoxo-Platinum(II) Complexes. X-Ray Crystal Structure of
Alcock, Nathaniel W.,Platt, Andrew W.G.,Pringle, Paul
, p. 2273 - 2280 (2007/10/02)
Reaction of the new phophine PPh2CH2CMe2OH with platinum(II) chloro complexes gives complexes of formula .The cis isomer in CDCl3 or CD3OD solution is in the ionic, chelate form cis-.At +25 deg C, rapid intramolecular -OH exchange takes place.Addition of AgClO4 gives the bis-chelate cis-2.Both of these cis species can be readily deprotonated to give the very stable bis(alkoxo) complex .The X-ray structure of this bis(alkoxo) complex as its 3.5 H2O solvate has been determinated 3.0> diffractometer-collected reflections>.The Pt atom has square- planar co-ordination, with Pt-O bonds of normal length .Thus the general instability of alkoxoplatinum complexes is attributed to facile β-hydride elimination and not to abnormally long and weak Pt-O bonds.The trans isomer forms the fluxional chelate complex trans-in CD3OD, but in CDCl3 it gives a neutral non-chelated species.It is also deprotonated by NEt3 but only to the non-fluxional mono-alkoxo complex .The (31)P- and (1)H n.m.r. data for the complexes are discussed.
