catena-Poly[[[diaqua(1,10-phenanthroline)manganese]-μ-3-[3-(carboxylatomethoxy)phenyl]acrylato] monohydrate]

The title compound, [Mn(C11H8O5)(C12H8N2)(H2O)2]·H2O, was obtained under hydrothermal conditions. The coordination environment of the Mn(II) atom is a distorted MnN2O4 octahedron defined by two N atoms from 1,10-phenanthroline, two water O atoms and two carboxylate O atoms from two acrylate anions. The bis-monodentate coordination mode of the anion leads to the formation of chains propagating in [010]. Intermolecular O—H⋯O hydrogen bonds link the chains into a two-dimensional network parallel to (100). In the voids of this arrangement, disordered lattice water molecules are present.

The title compound, [Mn(C 11 H 8 O 5 )(C 12 H 8 N 2 )(H 2 O) 2 ]ÁH 2 O, was obtained under hydrothermal conditions. The coordination environment of the Mn(II) atom is a distorted MnN 2 O 4 octahedron defined by two N atoms from 1,10-phenanthroline, two water O atoms and two carboxylate O atoms from two acrylate anions. The bis-monodentate coordination mode of the anion leads to the formation of chains propagating in [010]. Intermolecular O-HÁ Á ÁO hydrogen bonds link the chains into a two-dimensional network parallel to (100). In the voids of this arrangement, disordered lattice water molecules are present.
Data collection: APEX2 (Bruker, 2006); cell refinement: SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine induce complex structures and variable topologies (Yi et al.(2005)). Related information about carboxymethoxy acid and 1,10-phenanthroline can be obtained by these reports , Ma et al. (2005), Novitchi et al.(2005) As shown in Figure 1, the asymmetric unit of the title complex is composed of one Mn(II) atom, one 3-carboxymethoxy phenyclacrylate anion, one 1,10-phenanthroline ligand, two coordinating water molecules and one solvent water molecule. The six-coordinate Mn(II) ions is surrounded in form of a distorted octahedron by two N atoms from 1,10phenanthroline, two O atoms from L ligands and two O atoms from water molecules. In the title complex, 1,10phenanthroline is a terminal ligand and L plays the role of a bis-monodentate bridging ligand. Each manganese site is connected by two µ 2 -L ligands, forming a zigzag chain along the b axis ( Figure 2). There are four kinds of hydrogenbonding interactions in the compound (Table 1), but only three link the chains to each other, making up a twodimensional supramolecular network parellel to (100) (Figure 3).
Then the reactant mixture was cooled to room temperature at the rate of 5 K per hour. After evaporation of the resulting solution for a few days, yellow crystals of the title compound were obtained.

Refinement
The carbon-bound H-atoms were positioned geometrically and included in the refinement using a riding model [C-H 0.93 Å U iso (H) = 1.2U eq (C)]. Water H atoms were located in different maps and refined with distance restraints of O-H = 0.85 (2) Å and H-H = 1.35 Å, with displacement parameters set at 1.5U eq (O). A solvent water molecule with a large displacement parameter is also present in the voids of the structure. It is disordered and has been refined only with an U iso value and without its H atoms. The O···O contacts between the lattice water molecules are 2.525 Å. program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figure 1
The molecular structure of title compound. Displacement ellipsoids are drawn at the 50% probability level. The  The chain structure of the title compound along the b axis.

Figure 3
View of the supramolecular network connected by hydrogen-bonding interactions.

Special details
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > 2sigma(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.