issue contents

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890

June 2017 issue

Early view articles

Journal cover

research communications


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The reaction of the ligand N2,N3-bis­(pyridin-4-ylmeth­yl)pyrazine-2,3-dicarboxamide with silver(I) nitrate led to the formation of a three-dimensional coordination polymer.

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The hydrogen-bonding inter­actions in the crystal structures of N-(5-acetyl-2-methyl­phen­yl)quinoline-2-carboxamide, N-(5-acetyl-2-bromo­phen­yl)quinoline-2-carboxamide and N-(5-acetyl-2-ethynylphen­yl)quinoline-2-carboxamide are described. The latter two compounds also exhibit π–π inter­actions.

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The title dinuclear mercury(II) complex, [Hg2Cl4(C16H19N3)2], synthesized from the pyridine-derived Schiff base (E)-N1,N1-diethyl-N4-[(pyridin-2-yl)methyl­idene]benzene-1,4-di­amine (DPMBD), has inversion symmetry with the five-coordinated HgII centres having distorted square-pyramidal stereochemistry comprising two N-atom donors from a bidentate chelate BPMBD ligand and three Cl-atom donors, one monodentate and two bridging.

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The mol­ecular and crystal structure of the title Schiff base derivative is reported. O—H⋯N hydrogen bonds link mol­ecules into a supra­molecular chain along a.

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Trisodium rubidium hepta­magnesium hexakis(ortho­phosphate) exhibits a new structure type, with MgOx (x = 5 and 6) polyhedra linked directly to each other through common corners or edges and reinforced by corner-sharing with PO4 tetra­hedra. The resulting anionic three-dimensional framework leads to the formation of channels in which the Na+ cations are located, while the Rb+ cations are located in large inter­stitial cavities.

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The title compound represents another solvatomorph of apremilast, containing half of an ethanol and half of a water solvent mol­ecule per formula unit

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The structure and electrochemical properties of a nickel tri­pyridine–di­amine complex are reported. The complex has two redox couples at −1.50 and −1.80 V (versus Fc+/0) based on nickel.

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Reaction of silver(I) chloride with 1-(4-nitro­phen­yl)thio­urea and tri­phenyl­phosphane ligands of 1:2:1 ratio leads to the mononuclear complex [AgCl(C7H7N3O2S)(C18H15P)2]. In the crystal, bifurcated N—H⋯Cl and a weak C—H⋯O hydrogen bonds link mol­ecules into a two-dimensional network.

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The mol­ecular and crystal structures of the centrosymmetric naphthoxazine derivative is reported. In the absence of hydrogen-bonding and π–π stacking inter­actions, the crystal structure is stabilized by short C—H⋯π contacts.

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The CaO6 polyhedron and CuO4 quadrilateral are connected by the benzene-1,3,5-tri­carboxyl­ate anions to give a three-dimensional polymeric complex.

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The title compound comprises a central pyromellitic di­imide moiety with terminal decyl groups, with potential applications as an acaricide, insecticide and mematicide.

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In (CH3)2Sn[S2CN(CH2CH2)2O]2, a skew-trapezoidal bipyramidal coordination geometry based on a C2S4 donor set is found. Secondary Sn⋯S inter­actions lead to centrosymmetric dimeric aggregates in the crystal.

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The asymmetric unit of the title carbamate, contains two independent mol­ecules (A and B) with similar conformations. In the crystal, they are arranged alternately, forming –ABAB– chains linked by NHO(carbon­yl) hydrogen bonds, which extend along the a-axis direction.

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The crystal structure of Pb2(CrO4)(TeO3) is isotypic with its sulfate analogue Pb2(SO4)(TeO3). Comparison between the structures is made with the COMPSTRU program.

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The title structure consists of 3-amino­pyridinium cations and 1′-carb­oxy­ferrocene-1-carboxyl­ate monoanions held together by N—H⋯O and O—H⋯O hydrogen bonds.

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The homoleptic nickel–thio­semicarbazonate complex shows structural features including an unusual cis-coordination and trans-anagostic Ni—H intra­molecular inter­actions. In the crystal, complex and DMF solvate mol­ecules build up a one-dimensional hydrogen-bonded polymer along [010].

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The synthesis and structure of the title piperidine derivative is reported. It is one of a second generation of compounds designed and synthesized based on a very potent and selective α9α10 nicotinic acetyl­choline receptor antagonist ZZ161C, which has shown analgesic effects in a chemotherapy-induced neuropathy animal model.

Research communications

The first papers in this new format were published in July 2014. Research communications are longer papers with new text sections designed to help authors bring out the science behind their structure determinations. Figures are included in the published paper and, for the first time in Acta E, individual reports are not limited to single structure determinations. The Research communications format will make Acta E the natural home for structure determinations with interesting science to report.

Journal news

Acta E is now included in the Thomson Reuters Emerging Sources Citation Index.

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