The title compound, [Cu(2)Br(2)(C(7)H(8)NO)(2)], was synthesized by reaction of CuBr(2) with 2-(pyridin-2-yl)ethanol (hep-H) in methanol. The asymmetric unit consists of one hep ligand and a CuBr unit. The Cu(2+) ion is thereby coordinated by the N atom and the deprotonated hydroxy O atom in a distorted square-planar geometry that is completed by another O atom. The latter acts as bridging ligand towards the second, symmetry-equivalent, Cu atom, thus generating a centrosymmetric dimeric unit, with the inversion centre halfway between the Cu atoms. These units are linked via C-H⋯Br and C-H⋯O hydrogen bonds, leading to the formation of a hydrogen-bonded one-dimensional-polymeric chain along a..
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http://dx.doi.org/10.1107/S1600536811043637 | DOI Listing |
IUCrdata
November 2023
Department of Chemical Sciences, University of Johannesburg, 2006, South Africa.
The title compound, [RuCl(CHP)] or [RuCl(dppm)] (dppm = bis-(di-phenyl-phosphan-yl)methane, CHP) crystallizes as two half-mol-ecules (completed by inversion symmetry) in space group ( = 2), with the Ru atoms occupying inversion centers at 0,0,0 and 1/2, 1/2, 1/2, respectively. The bidentate phosphane ligands occupy equatorial positions while the chlorido ligands complete the distorted octa-hedral coordination spheres at axial positions. The bite angles of the phosphane chelates are similar for the two mol-ecules [(P-Ru-P) = 71.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
October 2023
School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, United Kingdom.
The title compound, [Fe(CN)(CHN)]·2HO, has been synthesized solvothermally and characterized by single-crystal X-ray diffraction. The octa-hedral iron coordination polyhedron contains two di(pyrimidin-2-yl)amine ligands coordinated in a bidentate fashion, and two monodentate dicyanimido ligands, each coordinated a terminal N atom, with the latter in a orientation. The ligand configuration about the iron atom is chiral, although the compound crystallizes as a racemic mixture: the Fe-N distances (> 2.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
February 2023
Institut für Anorganische Chemie, Universität Kiel, Max-Eyth.-Str. 2, 24118 Kiel, Germany.
Reaction of copper(I) iodide in pure 2-chloro-pyrazine leads to the formation of a few crystals of the title compound, [CuI(CHClN)] or (CuI)(2-chloro-pyrazine), which was characterized by single-crystal X-ray diffraction. In its crystal structure, the Cu cations are each tetra-hedrally coordinated by two iodide anions and two 2-chloro-pyrazine ligands and are linked into binuclear complexes consisting of (CuI) rings located on centers of inversion. PXRD investigations of a few crystals obtained from the suspension indicate that the title compound is contaminated with a small amount of the 2-chloro-pyrazine-deficient compound CuI(2-chloro-pyrazine) already reported in the literature.
View Article and Find Full Text PDFIUCrdata
October 2021
University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria.
The title compound, [CoHg(CH)(CHSe)](PF)·2CHCN or [Hg(CcSe)][PF]·2CHCN (Cc = CHCo), was obtained as bright-orange needle-shaped crystals. It is a salt containing a tetra-cationic dimercury species with six cobaltoceniumseleno-late ligands, four hexa-fluorido-phosphate counter-ions and two aceto-nitrile solvent mol-ecules. The cation (point group ) has a bi-tetra-hedral {HgSe} core with two bridging Se atoms and four terminal Se atoms.
View Article and Find Full Text PDFChemistry
December 2022
Department of Chemistry, Faculty of Science, Hokkaido University, N10W8, North-ward, Sapporo, 060-0810, Japan.
10,11-Bis[bis(4-dimethylaminophenyl)methylene]dibenzo[bf]thiepin (1) and -oxepin (2) were prepared as stable yellow crystalline compounds, which are the cyclic analogues of electron-donating hexaarylbutadienes. Upon two-electron oxidation, they are reversibly transformed into the title dications (1 and 2 ) exhibiting near-infrared (NIR) absorptions, which were also isolated as stable salts. These redox pairs can serve as new entries into less well-explored organic NIR-electrochromic systems, and the separation of redox peaks (electrochemical bistability) was attained for 1/1 and 2/2 , thanks to drastic geometrical changes between neutral and dicationic states, as revealed by a series of X-ray analyses.
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