期刊
DALTON TRANSACTIONS
卷 42, 期 30, 页码 10828-10837出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt50935d
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The reaction of dimesityl selenide (Mes(2)Se) with either PdCl2(PhCN)(2) in toluene or PdCl2 in toluene-acetonitrile yields a chloro-bridged binuclear palladium complex, [Pd2Cl2(mu-Cl)(2)(Mes(2)Se)(2)] (1), whereas with Na2PdCl4 in refluxing ethanol, a cyclometallated palladium complex, [Pd-2(mu-Cl)(2){MesSeC(6)H(2)(Me-2)CH2} 2] (2) is afforded. 2 can also be obtained when 1 is refluxed in ethanol. On treatment with Pb(Epy)(2) in dichloromethane, 2 afforded the Epy-bridged binuclear complexes, [Pd-2(mu-Epy)(2){MesSeC(6)H(2)(Me-2)CH2} (2)] (3; E = S (3a) or Se (3b)). Treatment of 2 with PPh3 yields a bridge-cleaved monomeric complex, [PdCl{MesSeC(6)H(2)(Me-2)CH2}(PPh3)]. The molecular structures of 1-3 were established by X-ray diffraction analyses. All the complexes are dimeric, with the palladium atoms acquiring a distorted square planar configuration. There are intra-molecular C-H. Pd interactions (d(M-H): 2.75 angstrom and
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