title: Poly[aqua-[μ(5)-5-(isonicotinamido)-isophthalato][μ(4)-5-(isonicotinamido)-isophthalato]cerium(III)silver(I)].
abstract: The 4d-4f heteronuclear title complex, [AgCe(C(14)H(8)N(2)O(5))(2)(H(2)O)](n), has a three-dimensional framework structure, generated by the carboxyl-ate and pyridyl groups of the 5-(isonicotinamido)-isophthalate (INAIP) ligands bridging the metal ions. The Ce(III) atom is coordinated by eight O atoms from six INAIP ligands and a water mol-ecule in a distorted tricapped trigonal-prismatic geometry, while the Ag(I) atom has a distorted trigonal-planar AgN(2)O geometry. O-H⋯O and N-H⋯O hydrogen bonds and π-π inter-actions between the pyridine and benzene rings [centroid-centroid distances = 3.642 (4) and 3.624 (3) Å] stabilize the crystal structure.
authors.affiliation: Department of Chemistry and Materials Science, Hengyang, Hunan 421008,  People's Republic of China.
authors.forename: Xue
authors.initials: X
authors.lastname: Nie
authors.forename: Jing-Nian
authors.initials: JN
authors.lastname: Qu
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