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Binary and ternary complexes of nickel(II) with 2-aminomethylbenzimidazole and salicylaldehyde: kinetic and equilibrium studies
Journal of the Chemical Society, Dalton Transactions
The complexation of Nil' with 2-aminomethylbenzimidazole (L) has been investigated at 20-40 "C, / = 0.30 mol dm-3. Both monoprotonated and unprotonated ligands bind the metal ion to form [NiL],', and the rate and activation parameters for the formation and acid-catalysed dissociation of this chelate are calculated. In the presence of salicylaldehyde (Hsal), a mixed-ligand complex, [NiL(sal)] +, is also formed as an intermediate which further condenses to the Schiff-base complex, [NiL']' [HL' =doi:10.1039/dt9940003727 fatcat:mby3r3o2jjd6rcyi6kpwojnlsa