Ms. Chernov'Yants et al., Complexation equilibria between 1-alkyl-2-benzimidazolylaldoximes and nickel(II) and cobalt(II) ions and their application in analytical chemistry, J ANALYT CH, 54(2), 1999, pp. 122-126
A series of 1-alkyl-2-benzimidazolylaldoximes was synthesized. Total energi
es of possible conformers and energetically most favorable ligand structure
s were determined by semiempirical quantum-chemical calculations using the
PM3 method. Complexation equilibria between aldoximes and Ni(II) and Co(II)
ions were studied, and a method for the calculation of stability constants
of the MHL2+ and MHL2+ chelates is proposed. Analytical characteristics of
the above complexes and their ion pairs with eosin were determined.