catena-Poly[[bis­[2-(2,3-dimethyl­anilino)benzoato-κO]cadmium(II)]-di-μ-3-pyridylmethanol-κ2 N:O;κ2 O:N]

In the crystal structure of the title compound, [Cd(C15H14NO2)2(C6H7NO)2]n, the Cd atom displays a distorted octa­hedral geometry, including two pyridine N atoms and two hydroxyl O from four symmetry-related 3-pyridylmethanol (3-pyme) ligands and two carboxylate O atoms from mefenamate [2-(2,3-dimethyl­anilino)benzoate] anions. The Cd atoms are connected via the bridging 3-pyme ligands into chains, that extend in the a-axis direction. The Cd atom is located on a center of inversion, whereas the 3-pyme ligands and the mefenamate anions occupy general positions

trans-Diaqua­bis(ethyl­enediamine-κ2 N,N′)copper(II) bis[3-(3-pyrid­yl)propionate] dihydrate

The asymmetric unit of the title complex, [Cu(C2H8N2)2(H2O)2](C8H8NO2)2·2H2O, contains one anion, one half-cation and one water mol­ecule. The CuII atom in the [Cu(en)2(H2O)2]2+ cation (en is ethyl­enediamine) lies on an inversion centre. The four N atoms of the en ligands in the equatorial plane around the CuII atom form a slightly distorted square-planar arrangement, while the slightly distorted Jahn–Teller octa­hedral coordination is completed by two water O atoms in axial positions. In the crystal structure, intra- and inter­molecular N—H⋯O and O—H⋯O hydrogen bonds form a three-dimensional network

Di-μ-nicotinato-κ2 N:O;κ2 O:N-bis­[aqua­(ethyl­enediamine-κ2 N,N′)(nicotinato-κN)cadmium(II)] dihydrate

The dinuclear mol­ecule of the title compound, [Cd2(C6H4NO2)4(C2H8N2)2(H2O)2]·2H2O, lies on an inversion centre and forms 12-membered (CdNC3O)2 metallacycles with the two Cd2+ ions bridged by two nicotinate ligands. Both Cd2+ ions display coordination polyhedra with a distorted octa­hedral geometry that includes two pyridine N atoms from bridging and terminal nicotinate anions, two amine N atoms from chelating ethylene­diamine ligands, carboxylate O atoms from bridging nicotinate anions and water O atoms. Inter­molecular O—H⋯O and N—H⋯O hydrogen bonds result in the formation of a three-dimensional network, and π–π stacking inter­actions are observed between symmetry-related pyridine rings of bridging as well as terminal nicotinate anions (the centroid–centroid distances are 3.59 and 3.69 Å, respectively, and the distances between parallel planes of the stacked pyridine rings are 3.53 and 3.43 Å, respectively). The two methylene groups of the ethylene­diamine ligand are disordered over two positions; the site occupancy factors are ca 0.8 and 0.2

trans-Tetraaquabis[3-(3-pyridyl)acrylato-κN]cobalt(II)

The asymmetric unit of the title compound, [Co(C8H6NO2)2(H2O)4], contains one half-molecule. The CoII atom lies on an inversion centre and is coordinated by two N atoms of the pyridine rings of 3-(3-pyridyl)acrylate anions and four O atoms of water molecules in a distorted octahedral coordination geometry. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules, forming a three-dimensional network

Monoclinic polymorph of trans-tetraaquabis[(4-pyridylsulfanyl)acetato-κN]cobalt(II)

The crystal structure of the title compound, [Co(C7H6NO2S)2(H2O)4], is a polymorph of the structure first reported by Du, Zhao & Wang [(2004). Dalton Trans, pp. 2065–2072]. The asymmetric unit of the title compound contains one half-molecule; the CoII atom lies on an inversion centre in a distorted octahedral geometry coordinated by two N atoms of the pyridine rings of the 4-pyridylthioacetate anions and four O atoms of water molecules. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules, forming a three-dimensional network

Bis(chloroacetato)-κ2O,O′;κO-methanol-κO-bis(2-methylfuro[3,2-c]pyridine-κN)copper(II)

In the title compound, [Cu(C2H2ClO2)2(C8H7NO)2(CH4O)], the Cu2+ ion has a highly distorted square-bipyramidal (4 + 1 + 1) coordination environment and is bonded to three carboxylate O atoms of two chloroacetate anions (monodentate and asymmetrically bidentate), two pyridine N atoms of 2-methylfuro[3,2-c]pyridine and one methanol O atom. There is an intramolecular O—H...O hydrogen bond. Intermolecular C—H...O hydrogen bonds result in the formation of a three-dimensional network and π–π stacking interactions [3.44–3.83 Å] are observed between symmetry-related rings of 2-methylfuro[3,2-c]pyridine. Further interactions in the crystal structure are a short Cl...Cl interaction [3.384 (2)Å] and C—H...π interactions between 2-methylfuro[3,2-c]pyridine rings