title: catena-Poly[[diaqua-calcium]bis-[μ-2-(1,3-dioxoisoindolin-2-yl)acetato]-κO,O':O;κO:O,O'].
abstract: In the title complex, [Ca(C(10)H(6)NO(4))(2)(H(2)O)(2)](n), the Ca(II) atom lies on a twofold rotation axis and adopts a dodeca-hedral geometry. The Ca(II) atom is octa-coordinated by two O atoms from two water mol-ecules and six O atoms from four acetate ligands. Each acetate acts as a tridentate ligand bridging two Ca(II) atoms, resulting in a chain running along the c axis. O-H⋯O and C-H⋯O hydrogen bonds connect the chains into a two-dimensional network parallel to [011]. π-π inter-actions between adjacent isoindoline-1,3-dione rings [centroid-centroid distance = 3.4096 (11) Å] further consolidate the structure. One of the carboxylate O atoms is disordered over two sites in a 0.879 (12):0.121 (12) ratio.
authors.forename: Moazzam H
authors.initials: MH
authors.lastname: Bhatti
authors.forename: Uzma
authors.initials: U
authors.lastname: Yunus
authors.forename: Sohail
authors.initials: S
authors.lastname: Saeed
authors.forename: Syed Raza
authors.initials: SR
authors.lastname: Shah
authors.forename: Wing-Tak
authors.initials: WT
authors.lastname: Wong
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677