issue contents

ISSN: 2056-9890

January 2023 issue

Highlighted illustration

Cover illustration: The reaction of Co(NCS)2 with 3-bromo­pyridine in aceto­nitrile resulted in the formation of bis­(aceto­nitrile-κN)bis­(3-bromo­pyridine-κN)bis­(thio­cyanato-κN)cobalt(II), [Co(NCS)2(C5H4BrN)2(C2H3N)2], a complex containing a slightly distorted CoN6 octahedron. In the crystal, the complexes are linked by C—H⋯S, C—H⋯Br, C—H⋯N and π–π interactions. The report also describes the mass losses observed in TG-DTA measurements. See: Krebs, Jess & Näther [Acta Cryst. (2022). E78, 14–18].

research communications

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The title compound was synthesized via slow evaporation of an aqueous solution of picric acid with the substituted morpholine base and crystallized with one cation (C6H15N2O)+, one anion (C6H2N3O7) and a water mol­ecule in the asymmetric unit. The morpholine ring in the cation adopts a chair conformation. The structure is stabilized by C–H⋯O, O—H⋯O, O—H⋯N and N—H⋯O hydrogen-bonding inter­actions and π–π stacking. The inter­molecular inter­actions of the synthesized compound were qu­anti­fied by Hirshfeld surface analysis.

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The crystal structure of the title compound consists of discrete octa­hedral complexes, which are linked by inter­molecular C—H⋯S and C—H⋯N hydrogen bonds into chains.

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In the crystal structure of the title compound, the nickel cations are octa­hedrally coordinated by two terminal N-bonded thio­cyanate anions and four 3-methyl­pyridine ligands.

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Iclaprim and mesylate mol­ecules are linked into a hydrogen-bonded mol­ecular tape, the central section of which is composed of fused rings.

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The crystal structures of the di­sulfide derivative of (Z)-ethene-1,2-bis­(di­phenyl­phosphine) as well as its complex with PtII are described here. The structure of the phosphine sulfide features intra­molecular π–π inter­actions and C—H⋯S hydrogen bonds, as well as inter­molecular π–π and C—H⋯π inter­actions. The structure of the platinum(II) complex features inter­molecular C—H⋯Cl and C—H⋯S hydrogen bonds.

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The crystallization and supra­molecular structure of a new europium(III) compound based on thio­phene­acrylic acid is reported.

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Na2S2O3·2H2O has been known for more than a hundred years but no structural data were known to date. Now, crystals of this compound have been grown at the surface of an aqueous solution of Na2S2O3. The sodium cations are five- to seven-coordinate by thio­sulfate anions and water mol­ecules with the anions acting as mono- and bidentate ligands. The thio­sulfate anions and water mol­ecules are connected by O—H⋯O and O—H⋯S hydrogen bonds of medium strength to form corrugated layers, which are linked by sodium cations.

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In the crystal structure of the title compound, the dimesitylboron group acts to reduce the delocalization of the nitro­gen atom's lone pair into the pyrrole ring, with increases in the two N—C bond lengths compared to pyrrole itself. The N—B bond is 1.44125 (15) Å long.

Research communications

Research communications are designed to help authors bring out the science behind their structure determinations. Authors are encouraged to report more than one structure in the same communication and also to include the results of investigations with other techniques. The Research communications format makes Acta E the natural home for structure determinations with interesting science to report.


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Acta E is included in the Emerging Sources Citation Index.


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