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Synthesis of Chelate Stabilised Alcohol- and Alkoxo-Platinum(II) Complexes. X-Ray Crystal Structure of

DOI: 10.1039/DT9870002273

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2273 - 2280 (1987)

Update date:2022-08-03

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Authors:

Alcock, Nathaniel W.Alcock, Nathaniel W.

Platt, Andrew W.G.Platt, Andrew W.G.

Pringle, PaulPringle, Paul

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Article abstract of DOI:10.1039/DT9870002273

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-<(1)H> and (1)H n.m.r. data for the complexes are discussed.

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Product name:cis-chloro(3-diphenylphosphino-2-methylpropan-2-ol-P)(3-diphenylphosphino-2-methylpropan-2-ol-OP)platinum(II) hexafluorophosphate

Cas No:111188-08-0

111188-08-0

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