A NOVEL ONE-DIMENSIONAL COPPER(II) COMPLEX OF A CARBOXYMETHYLATED TRICYCLIC AZACROWN ETHER DERIVATIVE LINKED BY HYDROGEN BONDING

摘要

The complex [CuL] centre dot H_2O (H_2L=4,13-dioxa-1,7,10,16-tetraaza-1,16:7,10-bis(ethylene)-9,18-diacetic acid cyclo-octadecane-8,17-dione) has been synthesized and structurally characterized. It crystallizes in the triclinic system, space group P1 with a=9.0111(7), b=9.4371(7), c=14.3092(110 A, a=89.84692), beta=81.871(2), gamma=65.616(2) deg, V=1095.05(14) A~3, and Z=1. The structure of the complex consists of two different CuL coordination moieties in which six-coordinated copper ions each have different coordination environments. In both Cul moieties, copper ions are coordinated to two tertiary nitrogen and four oxygen atoms, two from the crown ether ring and two from the pendant carboxylate groups. These two different CuL moieties are linked alternately by water molecules to form an infinite one-dimensional chain structure through hydrogen bonding between the water molecule and the uncoordinated oxygen atom of the carboxyl group.