Journal of the Chemical Society, Dalton Transactions p. 1703 - 1708 (1984)
Update date:2022-08-04
Topics:
Hussain, Wasif
Leigh, G. Jeffery
Ali, Hapipah Mohd.
Pickett, Christopher J.
Rankin, Douglas A.
The preparation of a series of complexes < M(N2)2<(p-XC6H4)2PCH2CH2P(C6H4X-p)2>2 > (M=Mo or W) is described.The variation of oxidation potential with phosphine substituents suggests that the electronic structures involve through-metal conjugation between the phosphine phosphorus and the dinitrogen, which contributes to the strength of the metal-dinitrogen bond.Electron-donating substituents on the phosphine make the compounds easier to oxidise.Studies of the rate of replacement of dinitrogen by benzonitrile show that electron-donating substituents also increase the metal-dinitrogen bond lability.
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