Synthesis and Structural Characterisation of Diorganotin(IV) and Diphenyllead(IV) Complexes of Pyrimidine-2-thionate Derivatives

摘要: The reaction between the ligands 4-(trifluoromethyl)pyrimidine-2-thione (4-CF3pymSH) and 6-methyl-4-(trifluoromethyl)pyrimidine-2-thione (6-Me-4-CF3pymSH) corresponding diorganotin(IV) dichloride [R2SnCl2] (R = Me, tBu or Ph) diphenyllead(IV) in presence of triethylamine yields complexes [R2Sn(4-CF3pymS)2] [R2Sn(6-Me-4-CF3pymS)2] diorganolead(IV) [Ph2Pb(4-CF3pymS)2] [Ph2Pb(6-Me-4-CF3pymS)2], respectively. compounds have been characterised by microanalysis, mass spectrometry IR Mossbauer spectroscopy and, case compound that was sufficiently soluble, 1H, 13C, 119Sn 207Pb NMR spectroscopy. [Me2Sn(4-CF3pymS)2] (1), [Ph2Sn(4-CF3pymS)2] (2), [Ph2Sn(6-Me-4-CF3pymS)2] (5), [tBu2Sn(6-Me-4-CF3pymS)2] (6), (7) [Ph2Pb(6-Me-4-CF3pymS)2] (8) also X-ray diffraction. crystal structures show metal centre all these is a distorted octahedral environment with bonds to two carbon atoms from aryl alkyl substituents sulfur heterocyclic nitrogen pyrimidine derivative, which acts (κ2-N,S) chelating ligand. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)