Exomacrocyclic complexation: the speciation of copper(II) and nickel(II) complexes of the dibenzo-pyrido-macrocycle 3,22-dioxa-11,14,28-triazatetracyclo-[22.3.1.04,9,016,21]octacosa-1(28),4,6,8,16,18,20,24,26-nonaene
Abstract
Speciation studies of copper(II) and nickel(II) complexes of the title macrocycle in dimethyl sulphoxide reveal the presence of 1 : 1 and 1 : 2 metal : ligand ratios; the crystal structures of the 1 : 1 copper(II) perchlorate and the 1 : 2 nickel(II) nitrate complexes are reported.