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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)

Record type: Article

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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Citation

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), pp. 1915-1921. (doi:10.1016/j.poly.2004.04.023).

More information

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
ORCID for W. Levason: ORCID iD orcid.org/0000-0003-3540-0971

Catalogue record

Date deposited: 16 Feb 2006
Last modified: 17 Jul 2017 16:29

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Contributors

Author: W. Levason ORCID iD
Author: R. Ratnani
Author: G. Red

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