Cd(II) complexes with pendant armed oxa- and azamacrocyclic ligands

The coordination capability of the pendant-arm macrocyclic ligands L1 and L2 towards nitrate and perchlorate Cd(II) salts, has been investigated. The X ray crystal structure of [CdL1(CH3CN)](ClO4)2·CH3CN shows a mononuclear endomacrocyclic structure with the metal ion coordinated, in a distorted pentagonal bipyramid geometry. The complex [CdL2](ClO4)2 is also mononuclear, but the cadmium ion is in an distorted trigonal prism environment coordinated by the six nitrogen donor atoms from the ligand.