forthcoming articles

The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section C: Structural Chemistry.

See also Forthcoming articles in all IUCr journals.

Accepted 23 November 2015

The first crystal structures of six- and seven-membered tellurium- and nitro­gen-containing (Te—N) heterocycles: 2H-1,4-benzo­tellurazin-3(4H)-one and 2,3-di­hydro-1,5-benzo­tellurazepin-4(5H)-one

The structures of a six- and a seven-membered tellurium- and nitro­gen-containing (Te—N) heterocycle represent the first structurally characterized members of their respective classes. When compared to their sulfur analogs, they exhibit slightly greater deviations from planarity to accommodate the larger chalcogenide atom. Inter­molecular N—H⋯O hydrogen bonding forms centrosymmetric R_{2}^{2}(8) dimers in the six-membered hetereocyclic compound and chains in the seven-membered hetereocyclic compound, while inter­molecular Te⋯O contacts exist in the former. [OK]

Accepted 10 November 2015

Synthesis, crystal structure and magnetic properties of a two-dimensional cyanide-based heterometallic coordination polymer with cationic piperazinium ligands: poly[aqua­tetra-μ2-cyanido-κ8C:N-dicyan­ido-κ2C-(piperazinium-κN4)cobalt(III)copper(II)]

A two-dimensional cyanide-bridged bimetallic coordination polymer [CuIICoIII(CN)6(Hpip)(H2O)]n (Hpip is piperazinium) exhibits a two-dimensional (4,4) grid-like structure, in which cationic [CuII(Hpip)(H2O)]3+ and anionic [CoIII(CN)6]3− units are linked through bridging cyanide ligands. The grid is further extended into a three-dimensional supra­molecular network through hydrogen-bonding inter­actions. A magnetic investigation shows anti­ferromagnetic coupling in the compound.

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