摘要：

Ruthenium (III) complexes containing one, two or three α-N-heterocyclic mono- and di-carboxylic acid groups were prepared from the ammine complex, [Ru(NH 3 ) 5 Cl]Cl 2 by judicious interplay of controlling factors such as the metal:ligand ratio, reflux time etc . All the complexes were characterised by elemental analyses, spectroscopic (u.v.-vis., i.r., e.p.r.) techniques, magnetic measurements (at room temperature) and conductance measurements in solution. The electrochemical behaviour of the soluble complexes was studied by cyclic voltammetry. Their biological activity, in terms of the growth inhibition of Escherichia coli 10536, has been examined.

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