Anion and cation binding by a pendant arm cyclam and its macrobicyclic derivatives
Abstract
A series of transition-metal complexes of N,N′,N″,N‴-tetra(3-hydroxypropyl)cyclam (L1) are reported. The X-ray structures of the compounds reveal pendant arm coordination of one of the alcohol groups to give square-pyramidal metal centres with simultaneous hydrogen bonding to the counter anions.