Yttrium halide complexes of phosphine- and arsine oxides: synthesis, multinuclear NMR and structural studies
Yttrium halide complexes of phosphine- and arsine oxides: synthesis, multinuclear NMR and structural studies
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.
yttrium, phosphine oxide, arsine oxide, x-ray structures
crystal-structure
445-455
Hill, N. J.
9aa23b1b-287e-4c75-8d49-a7f313dcd00b
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Popham, M. C.
02a55e82-8c1d-4256-ac28-955979aaf0f1
Reid, G.
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Webster, M.
f26c6e36-cb2e-486e-b2ed-b0d25a3a71f7
1 March 2002
Hill, N. J.
9aa23b1b-287e-4c75-8d49-a7f313dcd00b
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Popham, M. C.
02a55e82-8c1d-4256-ac28-955979aaf0f1
Reid, G.
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Webster, M.
f26c6e36-cb2e-486e-b2ed-b0d25a3a71f7
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), .
(doi:10.1016/S0277-5387(01)01011-7).
Abstract
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
Identifiers
Local EPrints ID: 19775
URI: http://eprints.soton.ac.uk/id/eprint/19775
ISSN: 0277-5387
PURE UUID: 0ae04e3f-57e1-4241-b5cc-f84a4f40bbc1
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Date deposited: 16 Feb 2006
Last modified: 16 Mar 2024 02:43
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Author:
N. J. Hill
Author:
M. C. Popham
Author:
M. Webster
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