{D-1,4,7,10 -Tetrakis[(S)-2-hydroxy-propyl-kO]-1,4,7,10-tetraazacyclododecane-k4N}cadmium(II) 4-nitro-phenolate hydrate

Abstract

Crystallization of [Cd(S-thpc12)](ClO4)2·H2O {S-thpc12 is 1,4,7,10-tetrakis[(S)-2-hydroxypropyl]-1,4,7,10-tetraazacyclododecane} in the presence of sodium p-nitrophenolate forms the title complex, [Cd(C20H44N4O4)](C6H 4NO3)(ClO4)·H2O. in which p-nitrophenolate and water separately hydrogen bond to a different pair of cis-related pendant hydroxyl groups which, together with the four N atoms, are themselves hound to CdII in an approximately square antiprismatic arrangement. The diastereoselectivity of the complex-forming process is apparent from the fact that both different disymmetric cations in the asymmetric unit have the same Δ helicity.