catena-Poly[[[pentaaquacerium(III)]-μ-pyridine-2,4,6-tricarboxylato-κ4N,O2,O6:O6′] tetrahydrate]

Abstract

The CeIII atom in the title compound, {[Ce(C8H2NO6)(H2O)5]·4H2O}n, is N,O,O′-chelated by the carboxylate trianion and is coordinated by five water molecules; a carboxyl O atom from an adjacent trianion bridges the CeIII atom, resulting in a chain running along the a axis. The nine atoms surrounding the metal atom comprise a tricapped trigonal-prismatic polyhedron. The coordinated and lattice water molecules interact with each other and with the carboxyl O atoms by O—H...O hydrogen bonds, generating a three-dimensional network.