Issue 10, 1973

Four- and five-co-ordinate nitrosyl complexes of iridium(I)

Abstract

[IrCl{(NO)(PPh3)2]+, the nitrosyl analogue of IrCl(CO)(PPh3)2 has been prepared by chlorination of [Ir(NO)2-(PPh3)2]+ or by reaction of IrHCl(NO)(PPh3)2 with non-co-ordinating acids. Five-co-ordinate addition products are formed with the neutral ligands CO, PPh3, Ph2PCH2CH2PPh2, Ph2PCH[double bond, length half m-dash]CHPPh2, and P(OPh)3 while the co-ordinating anions (X), NO2, Cl and HS, form IrX2(NO)(PPh3)2. Hydrolysis of [IrCl(NO)(PPh3)2]+ produces [Ir(OH)(NO)(PPh3)2]+ and this same hydroxo-cation, together with triphenylphosphine oxide, results from the reaction of [IrH(NQ)(PPh3)2]+ with dioxygen. [Ir(OH)(NO)(PPh3)2]+ forms [Ir(OR)(NO)(PPh3)2]+ in alcohols, (R = Et or Prn) and these cations are returned to [IrH(NO)(PPh3)3]+ by the action of hydrogen in the presence of triphenylphosphine. Another member of this four-co-ordinate, d8, nitrosyl cation series, [Ir(CH9)(NO)(PPh3)2]+, was prepared from Ir(CH4)I(NO)(PPh3)2 by reaction with silver ions. The tendency towards five-co-ordination within the series is compared.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1973, 1014-1020

Four- and five-co-ordinate nitrosyl complexes of iridium(I)

C. A. Reed and W. R. Roper, J. Chem. Soc., Dalton Trans., 1973, 1014 DOI: 10.1039/DT9730001014

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements