Phosphine oxide and suiphoxide complexes of thorium(IV) and uranium(IV) halogenoacetates
- 1 January 1983
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 1153-1158
- https://doi.org/10.1039/dt9830001153
Abstract
Complexes of thorium(IV) and uranium(IV) carboxylates with phosphine oxides and sulphoxides of the types M(O2CR)4·nL [n= 4, M = Th or U, L = Me2SO (dmso), R = CF3 and L = PMe3O (tmpo), R = CCl3 or CHCl2;M = U,L = tmpo,R = CF3; n= 3, M = Th, L = tmpo,R = CF3 and L = PPh3O (tppo) or dmso, R = CCl3; M = U, L = tppo, R = CF3 and L = dmso or Ph2SO (dpso), R = CCl3; n= 2, M = Th, L = tppo, R = CF3 or CHCl2 and L = dpso, R = CF3 or CCl3; M = U, L = dpso, R = CF3 and L = tppo, R = CCl3 or CHCl2; n= 1, M = Th or U, L = dmso, R = CHCl2] have been prepared. The i.r. and u.v.–visible spectra [uranium(IV) complexes only] of these compounds are reported and the effects of steric crowding on the possible bonding arrangements of the carboxylate groups in the complexes are discussed in terms of a cone angle approach to steric crowding about the central metal ions.Keywords
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