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 12 January 2017

Crystal structure of (E)-4-Hy­droxy-6-methyl-3-{1-[2-(4-nitro­phen­yl)hydrazinyl­idene]eth­yl}-2-H-pyran-2-one

(E)-4-Hy­droxy-6-methyl-3-{1-[2-(4-nitro­phen­yl)hydrazinyl­idene]eth­yl}-2-H-pyran-2-one has been synthesized and characterized by single-crystal X-ray diffraction and by using FT–IR, 1H and 13C NMR and UV–Vis spectroscopic techniques.

Accepted 10 January 2017

Crystal structures and hydrogen bonding in the isotypic series of hydrated alkali metal (K, Rb and Cs) complexes with 4-amino­phenyl­arsonic acid

p-Arsanilic acid forms an isotypic set of three compounds with the alkali metals K, Rb and Cs, in which the primary layered coordination polymeric structures have similar asymmetric units comprising two independent and different metal cations and a bridging water mol­ecule which lie within crystallographic mirror planes parallel to (100). The layers are linked across [100] through amine N—H⋯O hydrogen bonds to arsonate and water O-atom acceptors, giving overall three-dimensional network structures.

Accepted 9 January 2017

Crystal structure of rubidium peroxide ammonia disolvate

The title compound, Rb2O2·2NH3, has been obtained as a reaction product of rubidium metal dissolved in liquid ammonia and glucuronic acid. As a result of the low-temperature crystallization, a disolvate was formed. The peroxide bond length is 1.530 (11) Å


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