Abstract
Reactions of title ylide, {(C6H5)3PCHCOC6H4C6H5)} (BPPPY), with mercury(II) halides in equimolar ratios in methanol yielded dinuclear complexes [(BPPPY)HgCl2]2 (1), [(BPPPY)HgBr2]2 (2), and [(BPPPY)HgI2]2 (3). Reactions of BPPPY with CdCl2 in equimolar ratios gave [(BPPPY)CdCl2]2 (4). Reaction of PdCl2 with BPPPY (1/2) in acetonitrile at room temperature gave cis/trans [PdCl2{CH(PPh3)COC6H4C6H5}2] (5). The same reaction at reflux gave the orthopalladated complex [Pd{CH{P(2-C6H4)Ph}(COC6H4C6H5)}(μ-Cl)]2 (6) along with the phosphonium salt [Ph3PCHCOC6H4C6H5]Br. The compounds were characterized by elemental analysis, IR-, 1H-, 13C-, and 31P-NMR spectroscopy. Single crystal X-ray analysis of 3 reveals the centrosymmetric dimeric structure containing the ylide and HgI2. Crystallographic data for 3 are: crystal system, monoclinic; space group, P 21/n, a = 15.7744(7), b = 23.0288(9), c = 20.2867(9) Å, β = 112.237(3)°, V = 6821.4(5) Å3, and Z = 1.
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