Bis(2-methyl­anilinium) diaqua­bis[dihydrogendiphosphato(2−)]cobaltate(II)

In the title cobalt(II) complex with 2-methyl­anilinium and diphosphate, (C7H10N)2[Co(H2P2O7)2(H2O)2], a three-dimensional network is built up from anionic layers of [Co(H2P2O7)2(H2O)2]2− units and 2-methyl­anilinium cations located between these layers. The dihydrogendiphosphate groups present a bent eclipsed conformation, while the Co2+ ions lie on inversion centers. An intricate network of O—H⋯O and N—H⋯O hydrogen bonds is established between the different components, assuring the cohesion of the network with other inter­actions, being of electrostatic and van der Waals nature

Synthesis, crystal structure, NMR characterization, Thermal analysis and Spectroscopic Characteristics of [2,3-(CH3)2C6H3NH3]6P6O18.2H2O

Single crystals of [2,3-(CH3)2C6H3NH3]6P6O18.2H2O were synthesized in aqueous solution. This compound crystalizes in the P 141">  Triclinic unit cell with the parameters a = 9.97 Å, b = 16.06 Å, c =18.62 Å, α = 93.03°,  b  = 89.75 °, g = 93.85°, and Z = 2. Its crystal structure, determined by X-ray diffraction, consists of inorganic layers parallel to the ac plane. The organic molecules are disposed parallel to the plane bc on either side of each inorganic layer on which are anchored by hydrogen bonds via their ammonium groups (N-H…O). Configuration of the asymmetric unit is characterized by FT-IR spectroscopy and solid state NMR study of 31P

Synthesis, crystal structures and spectroscopic investigation of new Cu/Schiff-base complexes

Three novel Copper complexes, [Cu(L1)2][CuCl2] (1),  [Cu(L2)Cl] (2) and [Cu2(L3)3Cl2] (3), have been prepared by reaction of CuCl with the Schiff-base ligands L1: N,N’-bis(thiophen-2-ylmethylene)-ethane-1,2-diamine, L2: N,N’-bis(1H-pyrrol-2-ylmethylene)ethane-1,2-diamine and L3: N,N’-bis(2-nitrobenzylidene)-ethane-1,2-diamine in acetonitrile. The solid-state structures of these complexes were determined by X-ray diffraction from single crystal data and characterized by 1H and 13C NMR, IR and UV/Vis spectroscopies. This study shows that (1) is an ionic complex with a Cu(I)-centered cation and an isolated linear dichlorocuprate(I) anion, (3) is a dinuclear neutral complex of Cu(I) while (2)  is a mononuclear neutral complex of Cu(II). In the three complexes, Cu is tetracordinated in different geometrical environments. The atomic arrangements and spectroscopic properties of the three complexes are reported. Complexes 1-3 exhibit, in the solid state at room temperature, photoluminescence between 320 and 550 nm

The one-dimensional coordination polymer poly[tetra­kis­[(4-chloro­phen­yl)methanaminium] [cadmate-μ-cyclo­hexa­phospho­rato]]

Cyclo­hexa­phospho­ric acid (P6O18H6) reacts with cadmium carbonate and 4-chloro­benzyl­amine (CBA) to give the mononuclear title complex, (C7H9ClN)4[Cd(P6O18)]n, in which the CdII atom, lying on an inversion centre, has an octa­hedral coordination built of six O atoms of two centrosymmetric P6O18 rings. Each P6O18 ligand acts as a bridge, linking two CdII atoms and forming an anionic coordination polymer [Cd(P6O18)4−]n extending along [010]. Adjacent polymeric chains are connected through N—H⋯O and C—H⋯O hydrogen bonds, generating a three-dimensional supra­molecular network

2,5-Dimethyl­anilinium nitrate

In the title salt, C8H12N+·NO3 −, all non-H atoms of the cation lie on mirror planes. The nitrate counteranion has m symmetry and acts as a hydrogen-bond acceptor of N—H⋯O hydrogen bonds, connecting the cations and anions into layers running parallel to the ab plane

2-Amino-3-nitro­pyridinium hydrogen selenate

The asymmetric unit of the title compound, C5H6N3O2 +·HSeO4 −, contains two monoprotonated 2-amino-3-nitro­pyridinium cations and two hydrogen selenate anions which are connected through N—H⋯O and O—H⋯O hydrogen bonds, building chains parallel to the a direction. These chains are further connected to each other by weaker C—H⋯O hydrogen-bonding inter­actions, leading to the formation of a three-dimensional network

2-Amino­pyrimidinium hydrogen sulfate

In the crystal structure of the title compound, C4H6N3 +·HSO4 −, hydrogen sulfate anions self-assemble through O—H⋯O hydrogen bonds, forming chains along the b axis, while the cations form centrosymmetric pairs via N—H⋯N hydrogen bonds. The 2-amino­pyrimidinium pairs are linked to the sulfate anions via N—H⋯O hydrogen bonds, forming a two-dimensional network parallel to (10). In addition, weak inter­molecular C—H⋯O contacts generate a three-dimensional network

2-Amino-3-nitro­pyridinium hydrogen oxalate

In the non-centrosymetric title compound, C5H6N3O2 +·C2HO4 −, the hydrogen oxalate anions form corrugated chains parallel to the c axis, linked by O—H⋯O hydrogen bonds. The 2-amino-3-nitro­pyridinium cations are anchored between theses chains by N—H⋯O and C—H⋯O hydrogen bonds and van der Waals and electrostatic inter­actions, creating a three-dimensional network

Bis(2,5-dimethyl­anilinium) tetra­chlorido­zincate(II)

In the title compound, (C8H12N)2[ZnCl4], the Zn2+ ion adopts a distorted tetra­hedral coordination geometry. In the crystal, the cations and anions are linked by N—H⋯Cl hydrogen bonds, leading to ribbons propagating parallel to the a axis