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Two isomers of a new tetraaza macrotricycle 2, 2,4,9,9,11-hexaazamethyl-1,5,8,12-tetraazatricyclo[10.2.2, have been prepared by the reaction of 1-bromo-2-chloroethane with C-meso- 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane)shows that the complex has distorted square-pyramidal coordination geometry with an apically coordinated water molecule. Unexpectedly, the. The copper(II) complexes readily react with CN -ion to yield the cyano-bridged dinuclear complex [ , respectively.

The reaction of 3, 14-dimethyl-2,6,13,17-tetraazatetracyclo[16. .