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 24 March 2017

Crystal structures of three 4-substituted-2,2′-bi­pyridines synthesized by Sonogashira and Suzuki–Miyaura cross-coupling reactions

In the crystal structures of three 4-substituted-2,2′-bi­pyridines prepared using facile synthetic procedures, two novel 4-alkynyl-2,2-bi­pyridines via the Sonogashira cross-coupling reaction and one 4-aryl-2,2′-bi­pyridine via the Suzuki–Miyaura cross-coupling reaction, the planar 4-alkynyl-substituted derivatives are in contrast to the non-planar 4-aryl derivative.

Accepted 23 March 2017

Crystal structure of [2-({2-[(2-amino­benzyl­idene)amino]­benzyl­idene}amino)-4-chloro­phenol­ate]nickel(II)

The metal atom of the title compound is four coordinated. The asymmetrically appended Cl atom and a widely spread π-conjugated system of the complex mol­ecule construct the supra­molecular structures of a hydrogen-bonded chain and a π–π inter­acted column.

Accepted 23 March 2017

Crystal structure of N-(2-Benzoyl-5-ethynylphen­yl)quinoline-2-carboxamide

In the title compound, the quinoline ring system forms a dihedral angle of 20.9 (1)° with ethynyl-substituted benzene ring. The unsubstituted phenyl ring forms a dihedral angles of 52.7 (1)° with the quinoline ring system and 54.1 (1)° with the ethynyl-substituted benzene ring. An intra­molecular bifurcated N—H⋯(O,N) hydrogen bond forms S(5) and S(6) rings. In the crystal, weak C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network.

Accepted 23 March 2017

Crystal structure of tetra­aqua­bis­(pyrimidin-1-ium-2–4-diolato-κO4)manganese(II)

The crystal structure of the MnII complex of 4,6-di­hydroxy­primidine (L), [MnL2(H2O)4], shows that the ligand coordinates to the metal ion through one deprotonated hy­droxy group from each of two ligands.

Accepted 21 March 2017

Crystal structure of [Cu(tmpen)](BF4)2 (tmpen is N,N,N′,N′-tetra­kis­[(6-methyl­pyridin-2-yl)meth­yl]ethane-1,2-di­amine)

The mononuclear copper complex {N,N,N′,N′-tetra­kis­[(6-methyl­pyridin-2-yl)meth­yl]ethane-1,2-di­amine-κ6N}copper(II) bis­(tetra­fluorido­borate) shows a distorted octa­hedral environment around the CuII cation. The presence of the 6-methyl substituent hinders the approach of the pyridine group to the CuII core. The bond lengths about CuII are significantly longer than those of analogues without the 6-methyl substituents.

Accepted 21 March 2017

Crystal structure and absolute configuration of (4S,5R,6S)-4,5,6-trihy­droxy-3-methyl­cyclo­hex-2-enone (gabosine H)

The absolute configuration of the title compound, determined as 4S,5R,6S on the basis of the synthetic pathway, was confirmed by single-crystal X-ray diffraction. The mol­ecule is formed by a substituted six-membered cyclo­hexene ring adopting an envelope conformation and substituted by carbonyl, methyl and hydroxyl groups. The supra­molecular structure is mainly built by a combination of O—H⋯O and weaker C—H⋯O hydrogen bonds.

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