Synthesis and spectroscopic properties of Mo(VI) complexes with phosphine oxide ligands and the crystal structures of MoO2X2(OPMe3)(2) (X=Cl or Br) and MoO2Br2{0-C6H4(P(O)Ph-2)(2)}center dot 2CH(2)Cl(2)
Synthesis and spectroscopic properties of Mo(VI) complexes with phosphine oxide ligands and the crystal structures of MoO2X2(OPMe3)(2) (X=Cl or Br) and MoO2Br2{0-C6H4(P(O)Ph-2)(2)}center dot 2CH(2)Cl(2)
The colourless neutral Mo(VI) complexes [MoO2Cl2(OPMe3)(2)], [MoO2Cl2(L-L)] (L-L = Ph2P(O)CH2P(O)Ph-2, Ph2P(O)CH2CH2P(O)Ph-2 and o-C6H4(P(O)Ph-2)(2)) have been obtained in good yield by reaction of MoO2Cl2 with the ligand in anhydrous CH2Cl2 solution. The corresponding light yellow bromo species were obtained from reaction of a CH2Cl2 solution of the phosphine oxide ligand with MoO3 and HBr. The complexes have been characterised by IR, H-1, P-31{H-1} and where possible by Mo-95 NMR spectroscopy and trends in the spectroscopic data are discussed. Crystal structures of [MoO2X2(OPMe3)(2)] (X = Cl or Br) and [MoO2Br2{o-C6H4(P(O)Ph-2)(2)}] (.) 2CH(2)Cl(2) are also described. Each of the compounds adopts a distorted octahedral geometry at Mo(VI) with trans halo ligands, a cis dioxo unit and with the O-bound phosphine oxide ligands completing the coordination environment.
molybdenum, mo-95 nmr, x-ray structures, phosphine oxide
nuclear-magnetic-resonance, multinuclear nmr, molybdenum(vi), titanium(iv), 6-coordinate, thioether, halides
1915-1921
Hursthouse, M. B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Ratnani, R.
5c33e340-5b43-4fae-b43d-c37ae26100ff
Red, G.
f9dcb3ff-58f8-423a-ad0b-5403bcd8860c
8 July 2004
Hursthouse, M. B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Levason, W.
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Ratnani, R.
5c33e340-5b43-4fae-b43d-c37ae26100ff
Red, G.
f9dcb3ff-58f8-423a-ad0b-5403bcd8860c
Hursthouse, M. B., Levason, W., Ratnani, R. and Red, G.
(2004)
Synthesis and spectroscopic properties of Mo(VI) complexes with phosphine oxide ligands and the crystal structures of MoO2X2(OPMe3)(2) (X=Cl or Br) and MoO2Br2{0-C6H4(P(O)Ph-2)(2)}center dot 2CH(2)Cl(2).
Polyhedron, 23 (11), .
(doi:10.1016/j.poly.2004.04.023).
Abstract
The colourless neutral Mo(VI) complexes [MoO2Cl2(OPMe3)(2)], [MoO2Cl2(L-L)] (L-L = Ph2P(O)CH2P(O)Ph-2, Ph2P(O)CH2CH2P(O)Ph-2 and o-C6H4(P(O)Ph-2)(2)) have been obtained in good yield by reaction of MoO2Cl2 with the ligand in anhydrous CH2Cl2 solution. The corresponding light yellow bromo species were obtained from reaction of a CH2Cl2 solution of the phosphine oxide ligand with MoO3 and HBr. The complexes have been characterised by IR, H-1, P-31{H-1} and where possible by Mo-95 NMR spectroscopy and trends in the spectroscopic data are discussed. Crystal structures of [MoO2X2(OPMe3)(2)] (X = Cl or Br) and [MoO2Br2{o-C6H4(P(O)Ph-2)(2)}] (.) 2CH(2)Cl(2) are also described. Each of the compounds adopts a distorted octahedral geometry at Mo(VI) with trans halo ligands, a cis dioxo unit and with the O-bound phosphine oxide ligands completing the coordination environment.
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Published date: 8 July 2004
Keywords:
molybdenum, mo-95 nmr, x-ray structures, phosphine oxide
nuclear-magnetic-resonance, multinuclear nmr, molybdenum(vi), titanium(iv), 6-coordinate, thioether, halides
Identifiers
Local EPrints ID: 20243
URI: http://eprints.soton.ac.uk/id/eprint/20243
ISSN: 0277-5387
PURE UUID: 984a33c4-3b99-488f-8e5e-e5db2a5d57c4
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Date deposited: 16 Feb 2006
Last modified: 16 Mar 2024 02:35
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Author:
R. Ratnani
Author:
G. Red
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