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Yttrium halide complexes of phosphine- and arsine oxides: synthesis, multinuclear NMR and structural studies

Hill, N. J., Levason, W., Popham, M. C., Reid, G. and Webster, M. (2002) Yttrium halide complexes of phosphine- and arsine oxides: synthesis, multinuclear NMR and structural studies Polyhedron, 21, (4), pp. 445-455. (doi:10.1016/S0277-5387(01)01011-7).

Record type: Article


The reactions of YCl3.6H(2)O, YBr3.6H(2)O and YI3.8H(2)O with Ph3PO, Ph3AsO, Ph2MePO, Me3PO, Me3AsO, o-C6H4{P(O)Ph-2}(2), (ppO(2)) and Ph2P(O)CH2P(O)Ph-2 (dppmO(2)) have been examined in EtOH or Me2CO solution. Complexes isolated in the solid state include [YX2(Ph3PO)(4)]Z (X = Cl, Br or I; Z = X or PF6), [YX3(Ph2MePO)(3)], [YCl2(Ph2MePO)(4)]PF6, [YCl(Ph3PO)(5)][SbCl6](2), [Y(Me3PO)(6)]X-3, [YX2(Ph3AsO)(4)]X, [Y(Me3AsO)(6)]Cl-3 and [YCl2(L-L)(2)]Cl (L-L = ppO(2) or dppmO(2)) which were characterised by analysis, IR and multinuclear (H-1, P-31{H-1} and Y-89) NMR spectroscopy and conductance measurements. The X-ray crystal structures of [YCl2(Ph3PO)(4)]Cl.2.5EtOH.H2O, [YBr2(Ph3PO)(4)]PF6.Et2O and [Y(Me3PO)(6)]Br-3 are reported and discussed. The solution speciation (in CH2Cl2) in the various systems was examined by variable temperature multinuclear NMR spectroscopy. The Y-89 NMR chemical shifts show systematic trends with donor set which are described. No reaction between these ligands and YF3.1/2H(2)O was observed.

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Published date: 1 March 2002
Keywords: yttrium, phosphine oxide, arsine oxide, x-ray structures crystal-structure


Local EPrints ID: 19775
ISSN: 0277-5387
PURE UUID: 0ae04e3f-57e1-4241-b5cc-f84a4f40bbc1
ORCID for W. Levason: ORCID iD

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Date deposited: 16 Feb 2006
Last modified: 17 Jul 2017 16:30

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Author: N. J. Hill
Author: W. Levason ORCID iD
Author: M. C. Popham
Author: G. Reid
Author: M. Webster

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