A novel copper (II) metallacycle as a building block for the assembly of an extended supramolecular array containing channels and helical chains

Complexation of copper (II) perchlorate with cis,cis-1,3,5-cyclohexanetricarboxylic acid (CTA) and cis,trans-1,3,5-triaminocyclohexane (trans-tach) in the presence of triethylamine leads to the formation of a dinuclear metallacycle; [Cu2(trans-tach)2 (CTA)2] · 14H2O (1). The crystal structure of 1 shows an extended hydrogen bonded network comprising linear chains of metallacycles running perpendicular to solvent occupied channels.