(OC-6-11)-Tris(1,2-ethanedianine-N,N')cobalt(3+) 13408-73-6 14878-41-2 Co(en)3 Cobalt(3+), tris(1,2-ethanedianine-N,N')-, (OC-6-11)- Cobalt(III) tris(ethylenediamine) Tris(ethylenediamine)cobalt(III)