Nickel(II) compounds of some nitro-substituted imine-triamine macrocycles; the structure of (5,7,7,13 tetramethyl-13-nitro-1,4,8,11-tetraazacyclotetradec-4-ene κ4N1,4,8,11)nickel(II) tetrachlorozincate(II)

Reactions of (4,6,6-trimethyl-3,7-diazanon-3-ene-1,9-diamine)nickel(II) with methanal and nitroethane (or nitropropane) yield (5,7,7,13-tetramethyl-13-nitro-1,4,8,11-tetraazacyclotetradec-4-ene)nickel(II) {or (13-ethyl-5,7,7-trimethyl-13-nitro-1,4,8,11-tetraazacyclotetradec-4-ene)nickel(II)}. The structure of (5,7,7,13-tetramethyl-13-nitro-1,4,8,11-tetraazacyclotetradec-4-ene)nickel(II) tetrachlorozincate is reported.