catena-Poly[[[triaqua­[3-(4-carb­oxy­phen­oxy)phthalato-κO²]manganese(II)]-μ-4,4′-bipyridine-κ²N:N′] 4,4′-bipyridine monosolvate dihydrate]

In the title compound, {[Mn(C₁₅H₈O₇)(C₁₀H₈N₂)(H₂O)₃]·C₁₀H₈N₂·2H₂O}_n, the bridging mode of the coordinating 4,4′-bipyridine ligands leads to the formation of polymeric zigzag chains parallel to [0-11]. The chains are separated by 4,4′-bipyridine and water solvent mol­ecules. Within a chain, the Mn^II atom is six-coordinated by two N atoms of the bridging 4,4′-bipyridine ligands, three water O atoms and one carboxyl­ate O atom of a single deprotonated 3-(4-carb­oxy­phen­oxy)phthalic acid ligand. Both coordinating and solvent 4,4′-bipyridine mol­ecules are situated on centres of inversion. An intricate network of O—H...O and O—H...N hydrogen bonds involving the carb­oxy group, the coordinating water mol­ecules and the two types of solvent mol­ecules leads to the formation of a three-dimensional network.

Poly[hexa­aqua­(μ₉-cyclo­hexane-1,2,3,4,5,6-hexa­carboxyl­ato)trimanganese(II)]

The asymmetric unit of the title compound, [Mn₃(C₁₂H₆O₁₂)(H₂O)₆]_n, comprises one Mn^II ion, one third of a cyclo­hexane-1,2,3,4,5,6-hexa­carboxyl­ate anion and two aqua ligands. The anion is completed by application of a -3 axis. The Mn^II ion is six-coordinated by six O atoms from two aqua ligands and three different cyclo­hexa­carboxyl­ate anions in an octa­hedral geometry. The six carboxyl­ate groups adopt a bridging bidentate mode to ligate the Mn^II ions. Thus, each cyclo­hexane-1,2,3,4,5,6-hexa­carboxyl­ate anion adopts a μ₉-connected mode, ligating nine different Mn^II ions and forming a three-dimensional framework. In the framework, there are strong O—H...O hydrogen-bonding inter­actions, which further stabilize the crystal structure.

(6,6-Dimethyl-1-phenyl-6,7-di­hydro-5H-pyrrolizin-2-yl)(thio­phen-2-yl)methanone

In the title compound, C₂₀H₁₉NOS, the pyrrolizine ring is essentially planar (r.m.s. deviation = 0.001 Å) while the fused dihydro-pyrrolizine ring adopts an envelope comformation with the C atom bearing the methyl substituents as the flap. The dihedral angles between the pyrrolizine and the phenyl and thio­phene rings are 34.54 (7) and 44.93 (7)°, respectively. In the crystal, weak C—H...O hydrogen bonds link the mol­ecules into infinite zigzag chains parallel to the b-axis direction.

Ethyl 2-[6-(4-methyl­benzo­yl)-7-phenyl-2,3-di­hydro-1H-pyrrolizin-5-yl]-2-oxo­acetate

In the title compound, C₂₅H₂₃NO₄, the pyrrolizine ring is approximately planar with an r.m.s deviation from planarity of 0.0053 Å, while the fused di­hydro­pyrrolizine ring adopts an envelope conformation with the C atom connected to two CH₂ as the flap. The dihedral angles between the fused ring system and the phenyl and methyl­benzoyl rings are 41.65 (11) and 66.30 (8)°, respectively. In the crystal, weak C—H...O hydrogen bonds and C—H...π inter­actions occur. One mol­ecule is linked to five adjacent ones through eight hydrogen bonds, forming a three-dimensional network.