Preparation of Dimolybdenum Carbonyl and Ditungsten Carbonyl Complexes containing Triple Fluoro Bridges

DOI: 10.1039/DT9920000973

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 973 - 976 (1992)

Update date:2022-08-16

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Authors:

Dawson, David M.

Henderson, Richard A.

Hills, Adrian

Hughes, David L.

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Article abstract of DOI:10.1039/DT9920000973

The reaction of with HBF4*OEt2, under an atmosphere of carbon monoxide, in tetrahydrofuran gives <2(μ-F)3>BF4.The X-ray crystal structure of this compound reveals that the geometry about each tungsten atom is best considered as having a basal plane containing three fluorine atoms, (W-F)_av 2.12(1) Angstroem, with the remaining four ligands (two carbon monoxide and two phosphines) forming a second, parallel plane, in which the two carbon monoxide ligands are mutually trans, (W-C)_av 1.949(6) Angstroem, as are the two phosphines, (W-P)_av 2.457(1) Angstroem.The spectroscopic characteristics of <2(μ-F)3>⁺ are discussed and from this the nature of species formed in the reactions of (R3 = Et3 or MePh2) with HBF4*OEt2 under atmosphere of carbon monoxide can be inferred.

Full text of DOI:10.1039/DT9920000973

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