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ISSN: 2414-3146

January 2019 issue

Early view articles

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inorganic compounds


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

metal-organic compounds


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

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In the cationic MnI 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.

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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.

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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.

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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.

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

organic compounds


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

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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.

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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.

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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.

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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⋯NI and bifurcated C—H⋯(NT,NT) (I = imidazo[4,5-b]pyridine and T = triazole) hydrogen bonds into a double-column structure propagating along the b-axis direction.

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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.

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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.
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