The cis/trans-isomerism on cobalt(III) complexes with 1,4,8,11-tetraazacyclotetradecane-1,8-bis(methylphosphonic acid).

Bis(methylphosphonic acid) derivatives of 1,4,8,11-tetraazacyclotetradecane (cyclam). Synthesis, crystal and molecular structures, and solution properties.

Nucleophilic reactivity of perhydro-3,6,9,12-tetraazacyclopentenol[1,3-f,g]acenaphthylene. A unified approach to N-monosubstituted and n,N"-disubstituted cyclene derivatives.