forthcoming articles

The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section E: Crystallographic Communications.

See also Forthcoming articles in all IUCr journals.

Accepted 26 April 2016

Crystal structure of catena-poly[[(di­methyl sulfoxide-κO)(pyridine-2,6-di­carboxyl­ato-κ3O,N,O′)nickel(II)]-μ-pyrazine-κ2N:N′]

A one-dimensional NiII coordination polymer has been prepared via solvothermal synthesis using dimethyl sulfoxide as solvent. The coordination polymer forms double-chains along [010] and exhibits π–π stacking and C—H⋯π inter­actions forming the inter­ior of the double-chains, separated from a C—H⋯π hydrogen-bonding network in the space between the double-chains.

Accepted 25 April 2016

Crystal structure of catena-poly[bis­(ammonium) [zincate-bis­(μ-benzene-1,3,5-tri­carboxyl­ato-κ2O1:O1′)] 1-methyl­pyrrolidin-2-one disolvate]

The title three-dimensional metal–organic framework (MOF) material features an anionic framework constructed from Zn2+ cations and benzene-1,3,5-tri­carboxyl­ate (BTC) organic anions. Charge balance is achieved by outer sphere ammonium cations formed by degradation of di-n-butyl­amine in the solvothermal synthesis of the material.

Accepted 24 April 2016

m-Xylylenediaminium sulfate: crystal structure and Hirshfeld surface analysis

The crystal structure of the title salt consists of infinite (100) sheets of alternating organic and inorganic entities The m-xylylenediaminium cations are linked to the sulfate anions by N—H⋯O and asymmetric bifurcated N—H⋯(O,O) hydrogen bonds, generating a three-dimensional network. The Hirshfeld surface analysis and the two-dimensional fingerprint maps indicate that the packing is dominated by H⋯O/O⋯H and H⋯H contacts.

Accepted 23 April 2016

Crystal structure of bis­(aceto­phenone 4-benzoyl­thio­semicarbazonato-κ2N1,S)nickel(II)

In [Ni(C16H14N3OS)2], the nickel ion is tetra­coordinated in a square-planar geometry by two independent mol­ecules of the ligand which act as mononegative bidentate N,S-donors and form two five-membered chelate rings. Close approach of hydrogen atoms to Ni2+ suggests anagostic inter­actions (Ni⋯H—C) are present.

Accepted 22 April 2016

Crystal structures of tetra­methyl­ammonium (2,2′-bi­pyridine)­tetra­cyanidoferrate(III) trihydrate and poly[[(2,2′-bi­pyridine-κ2N,N′)di-μ2-cyanido-dicyanido(μ-ethyl­enedi­amine)(ethyl­enedi­amine-κ2N,N′)­cadmium(II)iron(II)] monohydrate]

The cyanide complex [N(CH3)4][Fe(2,2′-bipy)(CN)4]·3H2O (2,2′-bipy is 2,2′-bi­pyridine) was synthesized as a building block for the construction of a new two-dimensional cyanide-bridged Fe–Cd bimetallic coordination polymer, [Fe(2,2′-bipy)(CN4)Cd(en)2]·H2O, in which ethyl­enedi­amine (en) adopts both bridging and chelating coordination modes.

Accepted 22 April 2016

Crystal structure of the inverse crown ether μ4-oxido-tetra­kis­[μ2-bis­(tri­methyl­sil­yl)amido]­dicobalt(II)disodium, [Co2Na22-N(SiMe3)2}4](μ4-O)

The first cobalt-containing inverse crown ether, [Co2Na22-N(SiMe3)2}4](μ4-O), features a central μ4-oxido ligand. Weak inter­molecular Na⋯H3C—Si inter­actions form an infinite chain extending along [010] in the crystal.

Accepted 22 April 2016

Crystal structure of (+)-N-[(1R,5S,6S,9S)-5-hy­droxy­methyl-3,3,9-tri­methyl-8-oxo-2,4,7-trioxabi­cyclo­[4.3.0]nonan-9-yl]acetamide

In the title compound, the 1,3-dioxane ring is in a chair-like conformation, while the fused oxolane ring adopts an envelope form. In the crystal, classical O—H⋯O and N—H⋯O hydrogen bonds link the mol­ecules into a sheet structure.

Accepted 19 April 2016

Crystal structure and hydrogen bonding in the water-stabilized proton-transfer salt brucinium 4-amino­phenyl­arsonate tetra­hydrate

The tetra­hydrated brucinium salt of p-arsanilic acid forms a three-dimensional hydrogen-bonded network featuring the previously described undulating layered brucinium host substructure accommodating the anions and water guest mol­ecules and stabilized by cation–anion N—H⋯O and O—H⋯O hydrogen-bonding inter­actions.

Accepted 15 April 2016

Crystal structure of 3-benzamido-1-(4-nitro­benz­yl)quinolinium tri­fluoro­methane­sulfonate

In the title salt, each cation shows a moderate distortion between the planes of the amide groups and the quinolinium rings. The tri­fluoro­methane­sulfonate anions are linked to organic cations via N—H⋯O hydrogen-bonding inter­actions involving the NH amide groups. In the crystal, weak C—H⋯O hydrogen bonds and π-stacking inter­actions between the quinolinium and phenyl rings link the organic cations into chains.


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