Copper(II) Complexes of the Hexaaza Macrocyclic Ligand 3,6,9,16,19,22-Hexaaza-27,28-Dioxatricyclo (22.2.1(11.14))Octacosa-1(26),11,13,24-Tetraene and Their Interaction with Oxalate, Malonate, and Pyrophosphate Anions (Vol 35, Pg 2630, 1996)