Studies on palladium(II) complexes containing multidentate N-heterocycles

Abstract

Palladium dihalides/perchlorate react with the multidentate N-heterocycles (I), 1,3-bis(benzimidazol-2-yl)benzene (L1) 1,3-bis(1- methylbenzimidazol-2-yl)benzene (L2), 2,6-bis(benzimidazol-2-yl) pyridine (L3) and 2,6-bis(1-methylbenzimidazol-2-yl) pyridine (L 4) in ethanol/tetrahydrofuran in presence of hydrohalic acid to yield complexes of the compositions, PdX2L·nH2O (X = Cl, L = L1 or L2, n = 1; X = Cl, L = L3 or L4, n = 0; X = Br, L = L1 or L3 n = 0; X = Br, L = L2, n = 3; X = Br, L = L4, n = 2), PdL 2(ClO4)2·nH2O (L = L 1, n = 2; L = L2, n = 1) and Pd2L 3(ClO4)4·nH2O (L = L 3, n = 2; L = L4, n = 0). The complexes were characterised by elemental analysis, molar conductance measurements, IR, electronic, 1H, 13C NMR and FAB-mass spectral studies