The crystal structure of BaH₆As₄O₁₄ redetermined, revealing the localization of the hydrogen atoms

Localization of the hydrogen atoms in the crystal structure of BaH₆As₄O₁₄ helped to established an unambiguous hydrogen-bonding scheme.

Dipotassium tetra­hydroxido­penta­oxido­tetra­borate monohydrate

The structure of the title compound comprises of two potassium cations, one [B₄O₅(OH)₄]^2– anion and a water mol­ecule of crystallization.

Di­chlorido­[1,1-(di­phenyl­phosphino)hydrazide]palladium(II) di­chloro­methane monosolvate

The title compound, [PdCl₂(C₂₄H₂₂N₂P₂)]·CH₂Cl₂, is a palladium complex bearing a PNP and two chlorido ligands in a distorted square-planar coordination geometry.

fac-Bromido/chlorido­(0.50/0.50)[3-carbamoyl-1-(1,10-phenanthrolin-2-ylmeth­yl)pyridinium-κ²N,N′]tri­carbonyl­manganese(I) 0.49-bromide 0.51-chloride methanol monosolvate

In the cationic Mn^I title complex, a 1,10-phenanthroline ligand bearing a nicotinamide pendant group, and carbonyl and halogido ligands define the coordination sphere, resulting in a slightly distorted C₃N₂X (X = Br or Cl) octa­hedron, with the CO ligands in a fac configuration.

trans-Bis{2-[bis­(1H-pyrazol-1-yl)methyl]-1-methyl-1H-benzimidazole}­iron(II) bis­(perchlorate) aceto­nitrile disolvate

The asymmetric unit of the title complex contains one complete ligand mol­ecule, one perchlorate and one aceto­nitrile solvent mol­ecule. The iron(II) atom, situated on an inversion centre, is surrounded by six nitro­gen atoms from two ligands in an octa­hedral coordination sphere in which the two benzimidazole units adopt a trans-configuration. The crystal structure is stablized by extensive weak C—H⋯O and C—H⋯N inter­actions.

Bis(1-phenyl­imidazole)[5,10,15,20-tetra­kis­(2-pival­amido­phenyl)porphinato]iron(III) tri­fluoro­methane­sulfonate chloro­benzene disolvate

The crystal structure of the title complex reveals that the two axial imidazoles have an unusual relative orientation that is halfway between parallel and perpendicular.

Rubidium bis­(2-methyl­lactato)borate monohydrate

The organic–inorganic hybrid salt, [Rb(C₈H₁₂BO₆)(H₂O)]_n, is made up from a bis­(2-methyl­lactato)borate anion, a rubidium cation and a water mol­ecule of crystallization.

Tris(1,10-phenanthroline-κ²N,N′)cobalt(II) bis­(2,4,5-tri­carb­oxy­benzoate) monohydrate

In the title salt, the Co^II cation is solely surrounded by 1,10-phenanthroline ligands and is not hydrogen-bonded to the 2,4,5-tri­carb­oxy­benzoate anion.

Redetermination of poly[di-μ₃-iodido-[μ-1,2-trans-(pyridin-4-yl)ethene-κ²N:N′]dicopper(I)]

The structure of the title coordination polymer is refined using data collected at 100 K, affording a much more accurate structure in comparison with that previously published.

Di­chlorido­(2,2′-methyl­enedi­pyridine)­zinc(II)

The structure of di­chloro­(2,2′-methyl­enebispyridine)­zinc(II), synthesized from the reaction of zinc metal with di-2-pyridyl­ketone in the presence of titanium(IV) chloride, is reported.

(2,2′-Bi­pyridine)(1,2-di­cyano­ethene-1,2-di­thiol­ato)platinum(II)

The crystal structure of a classic platinum(II) di­imine di­thiol­ate construct, (2,2′-bi­pyridine)(maleo­nitrile-2,3-di­thiol­ato)platinum(II), is reported.

Di­aqua­bis­[4-(di­methyl­amino)pyridine-κN¹]bis­[2-(1,3-dioxo-2,3-di­hydro-1H-isoindol-2-yl)acetato-κO¹]cobalt(II)

The complex mol­ecule has a distorted CoN₂O₄ octa­hedral coordination geometry with the Co^II ion located on an inversion centre.

[(1,2,5,6-η)-Cyclo­octa-1,5-diene]bis­(thio­cyanato-κS)platinum(II)

The central Pt^II ion lies in a square-planar environment defined by the mid-points of the two π-coordinated double bonds of cyclo­octa-1,5-diene and two SCN⁻ anions.

5,5-Di­phenyl-cis-penta-2,4-dienoic acid

The crystal structure of the title compound features carb­oxy­lic acid inversion dimers linked by pairwise O—H⋯O hydrogen bonds.

Ethyl 4-chloro-2-oxo-1,2,5,6,7,8-hexa­hydro­quinoline-3-carboxyl­ate

The mol­ecular structure of a hexa­hydro­quinoline derivative is reported. The crystal structure is stabilized by N—H⋯O, C—H⋯O and C—H⋯Cl hydrogen bonds.

25,27-(3,6,9-Trioxaundecane-1,11-di­oxy)-26,28-{3-[4-(tri­cyano­ethylene)phenyl]-3-aza­pentane-1,5-di­oxy}calix[4]arene di­chloro­methane monosolvate

The mol­ecular and crystal structure of a calixarene derivative is reported. The crystal structure is stabilized by C—H⋯O, C—H⋯Cl and C—H⋯π(ring) hydrogen bonds.

2-((E)-{[3-(1H-Imidazol-1-yl)prop­yl]imino}­meth­yl)-4-[(E)-(4-methyl­phen­yl)diazen­yl]phenol

In the title compound, the dihedral angles between the central phenol ring and pendant toluyl and imidazole rings are 3.20 (16) and 81.44 (14)°, respectively. An intra­molecular O—H⋯N hydrogen bond occurs in the title compound.

6-Bromo-2-(4-chloro­phen­yl)-3-[(1-octyl-1H-1,2,3-triazol-4-yl)meth­yl]-3H-imidazo[4,5-b]pyridine

In the title compound, the imidazo[4,5-b]pyridine ring system is inclined at angles of 19.37 (12) and 89.27 (13)° to the phenyl and triazole rings, respectively, while the phenyl and triazole rings subtend a dihedral angle of 71.23 (15)°. In the crystal, the mol­ecules are linked by C—H⋯N_I and bifurcated C—H⋯(N_T,N_T) (I = imidazo[4,5-b]pyridine and T = triazole) hydrogen bonds into a double-column structure propagating along the b-axis direction.

Allyl 6-amino-5-cyano-2-methyl-4-phenyl-4H-pyran-3-carboxyl­ate

In the title compound, the 4H-pyran ring adopts a boat conformation. In the crystal, N—H⋯N and N—H⋯O inter­actions link the mol­ecules, forming an infinite ribbon running along the a-axis direction.

Ethyl 6′-cyano-7′-(p-tol­yl)-1′,6′,7′,7a′-tetra­hydro-3′H-spiro­[indeno­[1,2-b]quinoxaline-11,5′-pyrrolo­[1,2-c]thia­zole]-6′-carboxyl­ate

The structure of a new heterocyclic compound, containing a thia­zole and a pyrrolidine ring and an indeno­quinoxaline ring system, is reported here. The crystal structure features C—H⋯N, C—H⋯O and C—H⋯S inter­molecular inter­actions, which forming ring and chain motifs.

14-(4-Chloro­phen­yl)-14H-dibenzo[a,j]xanthene

In the title compound, C₂₇H₁₇ClO, the dihedral angle between the central heterocyclic ring of the xanthene fused-ring system and the pendant chloro­phenyl group is 87.60 (8)°.

(Z)-3-Butyl-5-(4-nitro­benzyl­idene)thia­zolidine-2,4-dione

In the crystal of the title N-substituted thia­zolidine-2,4-dione derivative, mol­ecules are linked by C—H⋯O hydrogen bonds and offset π–π inter­actions, leading to the formation of a three-dimensional structure.

N′-[5-Acetyl-3-(4-chloro­phen­yl)-2,3-di­hydro-1,3,4-thia­diazol-2-yl­idene]-5-(1H-indol-3-yl)-1-phenyl-1H-pyrazole-3-carbohydrazide di­methyl­formamide monosolvate

In the extended structure, mol­ecules related by 2₁ screw axes are stacked in the [001] direction to form columns linked by weak C—H⋯O inter­actions.

5-[5-(4-Chloro­phen­yl)isoxazol-3-yl]-N-phenyl-1,3,4-oxa­diazol-2-amine

In the crystal, adjacent mol­ecules related by inversion symmetry form columns parallel to the [010] direction through π–π stacking; these are cross-linked by N—H⋯N inter­actions in the [001] direction.