Sahu, K.; Thakur, R. Binuclear Macrocyclic Complexes of Ni(II), Co(II), Fe(II) and Cu(II) With 3,4,7,8,14,15,18,19, Octaphenyl 1,2,5,6,9, 10,12,13,16,17,20,21-Dodecaaza-Cyclobicosa-3,4,7,8,14,15,18,19-Octaene . ajc 2010, 4, 444-446.