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Cyclopalladation of dimesityl selenide: synthesis, reactivity, structural characterization, isolation of an intermediate complex with C-H center dot center dot center dot Pd intra-molecular interaction and computational studies

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Title Cyclopalladation of dimesityl selenide: synthesis, reactivity, structural characterization, isolation of an intermediate complex with C-H center dot center dot center dot Pd intra-molecular interaction and computational studies
 
Creator KOLAY, S
WADAWALE, A
DAS, D
KISAN, HK
SUNOJ, RB
JAIN, VK
 
Subject COUPLING REACTIONS
CRYSTAL-STRUCTURE
PALLADIUM(II)
PALLADACYCLES
SPECTROSCOPY
PLATINUM(II)
TRINUCLEAR
DINUCLEAR
CATALYSTS
DENSITY
 
Description 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
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-10-16T06:25:37Z
2014-10-16T06:25:37Z
2013
 
Type Article
 
Identifier DALTON TRANSACTIONS, 42(30)10828-10837
http://dx.doi.org/10.1039/c3dt50935d
http://dspace.library.iitb.ac.in/jspui/handle/100/15428
 
Language en