Dichloridobis(7-amino-2,4-dimethyl-1,8-naphthyridine-κ2 N,N′)cobalt(II) methanol disolvate

The title compound, [CoCl2(C10H11N3)2]·2CH3OH, crystallizes with an elongated Co coordination polyhedron in a very distorted octa­hedral geometry. Both naphthyridine ligands coordinate to the Co atom via two N atoms in a bidentate chelating mode. The remaining coordination sites are occupied by two Cl atoms. Two uncoordinated solvent methanol mol­ecules are hydrogen bonded to the Cl atoms. Additional N—H⋯O, C—H⋯Cl and N—H⋯Cl hydrogen bonds, and π–π stacking inter­actions [centroid–centroid distance 3.664 (4) Å], give rise to a three-dimensional network structure

1,1′-(Butane-1,4-di­yl)diimidazolium dinitrate

In the title compound, C10H16N4 2+·2NO3 −, the organic cation is located around an inversion centre. The imidazolium ring forms a dihedral angle of 62.7 (3)° with the plane defined by the C atoms of the –(CH2)4– aliphatic linker. Two anions bind to the cation via three-centre N—H⋯O hydrogen bonds and thus discrete hydrogen-bonded ion triples are formed. The nitrate is approximately coplanar with the imidazolium ring to which it binds

Bis(benzimidazol-1-yl)methane dihydrate

The bis­(benzimidazol-1-yl)methane mol­ecule of the title compound, C15H12N4·2H2O, displays a trans conformation with a twofold axis running through the methylene C atom. Two adjacent water mol­ecules are bonded to this mol­ecule through O—H⋯N hydrogen bonds, forming a trimer. Adjacent trimers are connected together via C—H⋯O inter­actions, forming a chain running along the b-axis direction. Two such chains are joined together via π–π inter­actions [centroid–centroid distance = 3.556 (2) Å], forming double chains, which are connected via the water mol­ecules through C—H⋯O associations, forming a sheet structure. The sheets are stacked on top of each other along the a-axis direction and connected through O—H⋯O and C—H⋯O inter­actions, forming a three-dimensional ABAB layer network structure

2-Methyl-1H-benzimidazol-3-ium hydrogen phthalate

The asymmetric unit of the title compound, C8H9N2 +·C8H5O4 −, contains two independent ion pairs. In each 2-methyl-1H-benzimidazolium ion, an intra­molecular O—H⋯O bond forms an S(7) graph-set motif. In the crystal, the components are linked by N—H⋯O hydrogen bonds, forming chains along [210]. Further stabilization is provided by weak C—H⋯O hydrogen bonds

5,13-Disulfamoyl-1,9-diazatetracyclo[7.7.1.02,7.010,15]heptadeca-2(7),3,5,10,12,14-hexaen-1-ium chloride

In the title salt, C15H17N4O4S2 +·Cl−, the chloride anion is disordered over two positions with occupancies of 0.776 (6) and 0.224 (6). The cation adopts an L shape and the dihedral angle between the benzene rings is 82.5 (3)°. In the crystal, inversion dimers of cations linked by pairs of N—H⋯N hydrogen bonds occur, with the bond arising from the protonated N atom. The cationic dimers are linked into chains via the disordered chloride ions by way of N—H⋯Cl hydrogen bonds and N—H⋯O, C—H⋯O and C—H⋯Cl inter­actions also occur, which help to consolidate the three-dimensional network

Poly[octa­aquadi-μ-phosphato-trinickel(II)]. Corrigendum

Corrigendum to Acta Cryst. (2008), E64, m259

Poly[μ4-succinato-μ2-succinato-bis[diamminecopper(II)]]

In the title compound, [Cu(C4H4O4)(NH3)2]n, the Cu atom is coordinated by the N atoms of two ammonia mol­ecules and four O atoms from three different succinate ligands in a highly distorted octa­hedral geometry. The Cu atom and the C and O atoms of the succinate ligands lie on a mirror plane. Two adjacent CuO4N2 octa­hedra share one common O–O edge, forming a Cu2O6N4 biocta­hedron with a Cu⋯Cu separation of 3.524 (2) Å. Neighboring biocta­hedra are connected by bis-unidentate succinate anions in the a-axis direction, while in the c-axis direction biocta­hedra are connected by bis-bidentate succinate anions, leading to an infinite two-dimensional network structure. These networks are further connected along the a-axis direction by hydrogen bonds between ammonia ligands and carboxyl­ate O atoms of neighboring network layers, forming a three-dimensional lamellar structure

3,5-Dimethyl-1H-pyrazole–2-hy­droxy-5-(phenyl­diazen­yl)benzoic acid (1/1)

There are two independent 3,5-dimethyl­pyrazole and two independent 2-hy­droxy-5-(phenyl­diazen­yl)benzoic acid mol­ecules [in which intra­molecular O—H⋯O bonds form S(6) graph-set motifs] in the asymmetric unit of the title compound, C5H8N2·C13H10N2O3. In the crystal, the components are linked by inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming four-component clusters. Further stabilization is provided by weak C—H⋯π inter­actions