catena-Poly[[aqua(N,N-dimethylformamide-κO)strontium(II)]-bis[μ-2-(4-carboxyphenoxy)propionato-κ3
O,O′:O′]]
In the crystal structure of the polymeric title compound, [Sr(C10H9O5)2(C3H7NO)(H2O)] n , the SrII atom is O,O′-chelated by the carboxylate end of two 2-(4-carboxyphenoxy)propionate monoanions, and is coordinated by a water molecule and a dimethylformamide (DMF) molecule. It also interacts with the carboxylate O atom of two adjacent monoanions; these bonds give rise to a zigzag chain along the a axis. Meanwhile, the carboxyl –CO2H end of the anion interacts with an acceptor site [O...O = 2.629 (4) Å]; this interaction and hydrogen bonding involving the water molecule [O...O = 3.191 (5) Å] give rise to a three-dimensional network. The eight coordinating O atoms comprise an irregular polyhedron around the metal atom. The Sr atom, the water O atom, and the N and O atoms of the DMF molecule lie on a special position of site symmetry m; the DMF molecule is disordered about the mirror plane.