title: Copper(II) complexes of cyclic tetra-azatetra-acetic acids-unusual features and possible analytical applications.
abstract: An examination of the copper(II) complexes of some cyclic tetra-azatetra-acetic acids has shown that the 1,4,7,10-tetra-azacyclotridecane-N,N',N'',N'''-tetra-acetic acid complex has an unusually high molar absorptivity and other favourable characteristics which make this ligand a convenient reagent for the fast and easy spectrophotometric determination of moderately small quantities of copper.
authors.affiliation: Centro de Química Estrutural-Complexo I, Instituto Superior Tecnico, Lisbon, Portugal.
authors.forename: R
authors.initials: R
authors.lastname: Delgado
authors.forename: J J
authors.initials: JJ
authors.lastname: da Silva
authors.forename: M C
authors.initials: MC
authors.lastname: Vaz