issue contents

Journal logoIUCrDATA
ISSN: 2414-3146

February 2021 issue

Highlighted illustration

Cover illustration: 9-[(Z)-2-(4,4,5,5-Tetra­methyl-1,3,2-dioxaborolan-2-yl)ethen­yl]-9H-carbazole has a polarized [pi]-system due to resonance between N-C(H)=C(H)-B and ionic N+=C(H)-C(H)=B- canonical structures. In comparison with the previously reported E-isomer, the reduced planarity of Z-isomer results in a decrease of the contribution of the N+=C(H)-C(H)=B- canonical structure. See: Kanagawa, Akagi & Okuno [IUCrData (2021). 6, x210142].

metal-organic compounds


link to html
The central NiII ion has an N4Cl2 octa­hedral coordination sphere defined by three N atoms of the tridentate 2,3,5,6-tetra-2-pyridyl­pyrazine ligand, one N atom of the pyridine ligand and two Cl anions.

link to html
In the title complex, the central PdII ion has an N4 square-planar coordination geometry defined by the four N atoms of two bidentate 2,3-di-2-pyridyl­pyrazine ligands.

link to html
In the title bimetallic complex, two Cd2+ metal ions are linked by a pair of Cl ions and their coordinations completed by another Cl ion and three N atoms.

organic compounds


link to html
In the title compound, the dihedral angle between the aromatic rings is 9.60 (7)° and the chain linking the rings has an anti conformation with a torsion angle of −178.28 (12)°. In the crystal, the components are linked by O—H⋯O and O—H⋯N hydrogen bonds, generating (010) sheets.

link to html
The structure of the natural product bufotenidine is reported as its iodide salt.

link to html
The title compound has a polarized π-system due to resonance between N—C(H)=C(H)—B and ionic N+=C(H)—C(H)=B canonical structures. In comparison with the previously reported E-isomer, the reduced planarity of Z-isomer results in a decrease of the contribution of the N+=C(H)—C(H)=B canonical structure.

link to html
The crystal structure of the title penta­cyclo-substituted naphtho­quinone, C13H10O2 is described.

link to html
The title compound has been synthesized as an inhibitor of glycogen synthase kinase-3β. Two mol­ecules inter­act via two N—H⋯N hydrogen bonds.

link to html
There are two main molecules in the asymmetric unit of the title compound in which the two indole ring systems are approximately perpendicular to one another, at dihedral angles of 69.3 (5) and 82.8 (4)°.

link to html
In the title compound, C30H31NO3S2, the piperidine ring adopts a distorted chair conformation. The thio­phene rings have twisted conformations about the C—C bonds. Two of the phenyl rings in the structure are positionally disordered over two sets of sites. The crystal packing features inter­molecular O—H⋯O hydrogen bonds and S⋯H, O⋯H, C⋯H and H⋯H contacts.
Follow IUCr Journals
Sign up for e-alerts
Follow IUCr on Twitter
Follow us on facebook
Sign up for RSS feeds