M. Vaira, F. Mani, N. Nardi
1996
Citations
0
Influential Citations
13
Citations
Journal
Journal of The Chemical Society-dalton Transactions
Abstract
The potentially hexadentate ligands 1,7-bis(1-methylimidazol-2-ylmethyl)-(L1), 1,7-dimethyl-4,10-bis(1-methylimidazol-2-ylmethyl)-(L2) and 1,7-dimethyl-4,10-bis(pyrazol-3-ylmethyl)-1,4,7,10-tetraazacyclododecane (L3) have been synthesized and their basicity constants determined by potentiometry at 25 °C in 0.15 mol dm–3 NaClO4. Nickel(II) and zinc(II) complexes with the three compounds have been prepared and characterized. The structures of [NiL1][BPh4]2 and [NiL2][ClO4]2·0.5H2O have been determined by single-crystal X-ray analyses. In both complex cations the metal ion is co-ordinated by the six nitrogen donor atoms of the ligand.