Abstract
The reaction of the new ambidentate ylide, Ph(3)PCHCOCH(2)COOC(2)H(5)
(EAPPY), with HgX(2) (X = Cl, Br and I) in equimolar ratios using
methanol as the solvent leads to binuclear complexes of the type
EAPPY center dot HgX(2)(2) (X = Cl (1), Br (2) and I (3)). Single
crystal X-ray analysis reveals the presence of a centrosymmetric dimeric
structure containing the ylide and HgX2 (X = Br or I). The IR and NMR
data of the product (EAPPY)center dot HgCl(2)(2) (I), formed by the
reaction of mercury(II) chloride with the same ylide, are similar to
those of 2 and 3. Analytical data indicate a 1:1 stoichiometry between
the ylide and Hg(II) halide in each of the three products. Theoretical
studies indicate that the nature of the R group in ylides of the type
Ph(3)PCHCOR has a weak effect on the Hg-C(ylide) bond length in
binuclear Hg(2)L(2)I(4) complexes. (C) 2011 Elsevier Ltd. All rights
reserved.
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