Template synthesis of copper(II) complexes of two twelve-membered tetradentate nitrogen donor macrocyclic ligands

Department of Chemistry, Zakir Husain College (University of Delhi), JLN Marg, New Delhi-110 002, India E-mail : amit1984@mantraonline.com Fax : 91-011-3215906 Manuscript received 16 April 2001, revised 7 September 2001, accepted 6 October 2001 Copper(II) complexes of general composition CuLX2 (where X = Cl-, 1/2 SO42-, NO3- and MeCOO-; L = DAED, BDAP) have been prepared with 2,3,8,9-tetramethy1-1,4,7,10-tetraazacyclododeca-1,3,7,9-tetraene [N4] (DAED) and 2,3,8,9-tetrapheny1-6,12-dimethyl­1,4,7,10-tetraazacyclododeca-1,3,7,9-tetraene [N4] (BDAP). All the complexes exhibits magnetic moment corresponding to one unpaired electron. The complexes have tetragonal geometry except the sulfato complexes, which are five-coordinate square-pyramidal