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 15 December 2017

Crystal structure of 6,7-de­hydro­royleanone isolated from Taxodium distichum (L.) Rich.

The crystal structure features two O—H⋯O hydrogen bonds, forming chains along the [010] direction.

Accepted 14 December 2017

Crystal structure of ethyl 2-cyano-2-(1,3-di­thian-2-yl­idene)acetate

In the title compound, ethyl 2-cyano-2-(1,3-di­thian-2-yl­idene)acetate, the six-membered 1,3-di­thiane ring has a twist-boat conformation. In the crystal, the mol­ecule stack in layers up the a axis; there are no significant inter­molecular inter­actions present.

Accepted 14 December 2017

Hydrogen bonds and π–π inter­actions in two new crystalline phases of methyl­ene blue

Two unprecedented solid phases of methyl­ene blue (MB+), viz. 3,7-bis­(di­methyl­amino)­pheno­thia­zin-5-ium chloride dihydrate and 3,7-bis­(di­methyl­amino)­pheno­thia­zin-5-ium bis­ulfite, have been obtained and structurally characterized. The effective absence of hydrogen-bond donors in the second compound has important consequences on the stacking geometry and supra­molecular inter­actions of the MB+ ions, which are analysed by Hirshfeld fingerprint plots.

Accepted 13 December 2017

An investigation to elucidate the factors dictating the crystal structure of seven ammonium carboxyl­ate mol­ecular salts

Hydrogen-bonded ladders typically encountered in ammonium carboxyl­ate salts did not form in the presence of a pyridine acceptor group.

Accepted 13 December 2017

Crystal structure of 5,15-bis­(4-methyl­phen­yl)-10,20-bis­(4-nitro­phen­yl)porphyrin nitro­benzene disolvate

The whole mol­ecule of the title porphyrin, which crystallized as a nitro­benzene disolvate, is generated by inversion symmetry. In the crystal, the porphyrin mol­ecules are linked by C—H⋯O hydrogen bonds, forming chains along [100]. The solvent mol­ecules are also linked by C—H⋯O hydrogen bonds, forming chains along [100]. Inter­digitation of the p-tolyl groups along the c axis creates rectangular channels in which the solvent mol­ecules are located.

Accepted 17 November 2017

An exploration of O—H⋯O and C—H⋯π inter­actions in a long-chain-ester-substituted phenyl­phenol: methyl 10-[4-(4-hydroxyphenyl)phen­oxy]decanoate

The superstructure of 4-(9-methyl­oxycarbonyl­non­yloxy)phenyl­phenol is dominated by O—H⋯O and C—H⋯O hydrogen-bonding and C—H⋯π inter­actions. Hirshfeld surface, fingerprint plot, inter­action energy and energy framework analyses were used to explore the nature and strength of the inter­molecular inter­actions.

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