Journal of the Chemical Society, Dalton Transactions p. 2821 - 2826 (1996)
Update date:2022-08-03
Topics:
Cecconi, Franco
Ghilardi, Carlo A.
Innocenti, Paolo
Midollini, Stefano
Orlandini, Annabella
Ienco, Andrea
Vacca, Alberto
Methyl- and phenyl-mercury(II) ions reacted, in the molar ratio 2:1, with bidentate phosphines L-L to give binuclear complexes of general formula [RHg(L-L)HgR]2+ . [L-L = Ph2P(CH2)nPPh2, n = 1-3]. When an excess of the phosphine ligand is present an intermolecular exchange process occurs which leads to the formation of the symmetrically substituted compounds, HgR2 and [Hg(L-L)2]2+. The reactions in solution have been studied by multinuclear NMR spectroscopy; the structure of the bimetallic species was deduced with the aid of computer simulation. The single-crystal structure of [Hg(Ph2PCH2CH2PPh2) 2][O3SCF3]2 [orthorhombic, space group Pbcn, a = 17.141(3), b = 20.158(3), c = 15.614(9) A, Z = 4] showed the mercury atom to be in a distorted-tetrahedral configuration.
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