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Journal logoIUCrDATA
ISSN: 2414-3146

April 2018 issue

Highlighted illustration

Cover illustration: The crystal structure of bis(tetra­phenyl­arsonium) hexa­chlorido­zirconate(IV) aceto­nitrile tetra­solvate is composed of alternating rows of bis­(tetra­phenyl­arsonium) cations and hexa­chlorido­zirconate(IV) anions, with aceto­nitrile solvate mol­ecules in the voids. See: Borjas, Mariappan Balasekaran, & Poineau [IUCrData (2017). 3, x180528].

inorganic compounds


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Trigonal Al13Fe3 was obtained by application of the high-pressure sinter­ing (HPS) technique.

metal-organic compounds


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The crystal structure of the title compound is composed of alternating rows of bis­(tetra­phenyl­arsonium) cations and hexa­chlorido­zirconate(IV) anions, with aceto­nitrile solvate mol­ecules in the voids.

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The structure of bis­(cobaltocenium) tetra­chloro­cobaltate(II) di­chloro­methane solvate has been determined at 100 K.

organic compounds


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The crystal structure of the title propyne derivative does not contain stabilizing inter­actions other than weak C—H⋯π inter­actions.

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In the mol­ecular structure, the phenyl rings are inclined at angles of 67.7 (1), 68.8 (1), 79.3 (1) and 62.3 (1)° to the plane of the 2,5-di­hydro­furan ring. The crystal structure features a hree-dimensional supra­molecular network formed through C—H⋯π and Br⋯Br inter­actions.

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The crystal and mol­ecular structure of a fluoro­alkyl­ated isoxazole derivative is reported. All atoms of the title mol­ecule lie on a mirror plane except two fluorine atoms each of the di­fluoro and tri­fluoro­methyl substituents.

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The di­hydro­quinoxaline moiety is planar and the majority of the ester substituent is nearly perpendicular to its mean plane. In the crystal, the mol­ecules form oblique stacks along the b-axis direction through slipped π-π-stacking inter­actions between adjacent di­hydro­quinoxaline units. The stacks are connected by additional C—H⋯O hydrogen bonds and C—H⋯π(ring) inter­actions to form an open three-dimensional network.

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The mol­ecular and crystal structure of the title quinoxaline derivative is reported. The crystal structure features C—H⋯O intra­molecular and weak C—H⋯O, C—H⋯N and C—H⋯π inter­molecular inter­actions.

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In the crystal, mol­ecules are packed into layers parallel to (010). Each layer contains the mol­ecules linked by a pair of strong N—H⋯O hydrogen bonds, while strong C—H⋯F hydrogen bonds connect mol­ecules into a two-dimensional network.

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The seven-membered ring in the title compound adopts a bowl-shaped conformation and an intra­molecular N—H⋯O hydrogen bond occurs.

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The crystal structure of (1S,4R)-1,11,11-trimethyl-1,2,3,4-tetra­hydro-1,4-methano­phenazine N5-oxide is reported.

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The title compound, obtained through the reduction of 4,4′-di­bromo­chalcone, has monoclinic P21 symmetry at 100 K. No directional inter­actions could be identified in the crystal.

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The crystal structure of an azulene derivative that co-crystallizes with two acetonitrile solvent mol­ecules is reported.

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The complete imidazolium cation in the title compound is generated by crystallographic mirror symmetry.

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The absolute configuration of the title compound has been confirmed as (2R, 3R).

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The conformation of the ester substituent is partially determined by an intra­molecular N—H⋯O hydrogen bond. The crystal packing consists of layers parallel to (\overline{1}12) held together by N—H⋯O and C—H⋯O hydrogen bonds.

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In the title compound, C13H15N5O2S, the acetamide N—C(=O)—C plane makes dihedral angles of 30.51 (11) and 51.93 (11)°, respectively, with the benzene ring and the mean plane of the di­amino­pyrimidine ring. There is an intra­molecular N—H⋯N hydrogen bond with an S(7) ring motif.

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The asymmetric unit of the title compound consists of two independent mol­ecules, which differ in the orientations of the phenyl and oxirane substituents.

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The title compound is the first known coupling product of metallated mesitylene.

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In the title compound, the dihedral angle between the two benzene rings is 73.45 (11)°. The central seven-membered ring is in a psuedo-boat conformation. In the crystal, pairs of mol­ecules are linked by N—H⋯O hydrogen bonds, forming inversion dimers.
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