title: catena-Poly[[[triaqua-(4,5-diaza-fluorene-9-one)cadmium]-μ-benzene-1,3-dicarboxyl-ato] dihydrate].
abstract: In the title compound, {[Cd(C(8)H(4)O(4))(C(11)H(6)N(2)O)(H(2)O)(3)]·2H(2)O}(n), the Cd(II) atom is seven-coordinated by two N atoms from the phenanthroline-derived 4,5-diaza-fluorene-9-one ligand, two O atoms from one bidentate benzene-1,3-dicarboxyl-ate ligand and three O atoms from the three water mol-ecules in a distorted penta-gonal-bipyramidal arrangement. Moreover, there are two dissociative water mol-ecules in each unit. Neighbouring units inter-act through π-π inter-actions [centroid-centroid distances = 3.325 (3) and 3.358 (4) Å] and O-H⋯O hydrogen-bonding, resulting in a two-dimensional network extending parallel to (001).
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Fang
authors.forename: Ze-Min
authors.initials: ZM
authors.lastname: Mei
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Jin
authors.forename: Wen-Liang
authors.initials: WL
authors.lastname: Qi