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Functionalised (phosphino)amines: synthesis, coordination and reactivity studies

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thesis
posted on 08.08.2018, 07:58 authored by Kirsty G. Gaw
Reaction of Ph2PCl with R(NH2)n (n = 1, 2 or 4) in the presence of NEt3 affords a series of mono-, di-, tetra- and octadentate (phosphino)amines, {Ph2PN(H)}nR or {(Ph2P)2N}nR (n =1, 2 or 4; R = functionalised aromatic group bearing methyl, keto, ester, ether, vinyl or thiazole substituents). Oxidation of these new (phosphino)amines with sulfur, selenium or hydrogen peroxide yields the corresponding phosphorus(V) compounds. Mixed phosphorus(III)/phosphorus(V) compounds containing P(III) and E donor centres are also described. The coordination chemistry of these new ligands towards various transition-metal centres (e.g. ruthenium, rhodium, palladium, platinum and gold) have been extensively studied. Thermal C–H activation of [PtMe2{PPh2N(H)R}2] or [RhCl2(η5-C5Me5){Ph2PN(H)R}] affords first examples of orthometallated (phosphino)amine complexes containing a five-membered ring M–P–N–C–C metalloring. Characterisation of a number of these novel compounds was achieved using single crystal X-ray analysis, revealing, in many cases, the presence of an intramolecular N–H···O hydrogen bond. [Continues.]

Funding

EPSRC. Infineum UK Ltd.

History

School

  • Science

Department

  • Chemistry

Publisher

© K.G. Gaw

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2001

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

en

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