catena-Poly[[[penta­aqua­cerium(III)]-μ-pyridine-2,4,6-tricarboxyl­ato-κ(4) N,O (2),O (6):O (6′)] tetra­hydrate]

The Ce(III) atom in the title compound, {[Ce(C(8)H(2)NO(6))(H(2)O)(5)]·4H(2)O}(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 Ce(III) 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.