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Tertiary Phosphine Adducts of t)4>. Crystal Structure of t)3(O2CBut)(PMe2Ph)2>

DOI: 10.1039/DT9930000877

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 877 - 884 (1993)

Update date:2022-08-06

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Authors:

Mountford, PhilipMountford, Philip

Williams, J. A. GarethWilliams, J. A. Gareth

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Article abstract of DOI:10.1039/DT9930000877

Treatment of the quadruply bonded ditungsten complex t)4> with phosphine PMeRR' (R = R'= Me or Ph; R = Me, R'= Ph) affords bis(adducts) which have the general formula W2(O2CBut4*2PMeRR'.Each adduct possesses a different arrangement of the PMeRR' and O2CBut ligands.The complex <2(μ-O2CBut)2(O2CBut)2(PMe3)2> contains two equatorially bound phosphine ligands per dimeric unit whereas in t)4(PMePh2)2> both phosphine ligands are axially co-ordinated.The crystallographically characterised complex t)3(O2CBut)(PMe2Ph)2> has a novel geometry in which one axially and one equatorially co-ordina ted PMe2Ph ligand is present.The compound t)2(O2CBut)2(PMe3)2> reacts with carbon monoxide or chlorotrimethylsilane to afford mononuclear t)2(CO)3(PMe3)2> or dinuclear t2Cl2(PMe3)2> respectively.

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Product name:{W2(O2CC(CH3)3)4(P(CH3)2C6H5)2}

Cas No:148482-96-6

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