Reactivity of diphosphines towards methyl- and phenyl-mercury(II) ions. Crystal structure of [Hg(Ph2PCH2CH2PPh2)2][O3SCF3]2
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 13,p. 2821-2826
- https://doi.org/10.1039/dt9960002821
Abstract
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)Å, Z= 4] showed the mercury atom to be in a distorted-tetrahedral configuration.Keywords
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