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The title compound, [Cu(2)(C(14)H(8)O(4))(2)(C(10)H(8)N(2))(2)], was obtained by solvothermal synthesis. The Cu(II) atom is coordinated by one chelating 2,2'-bipyridine ligand and two carboxyl groups from different biphenyl-2,2'-dicarboxyl-ate ligands, leading to a distorted octahedral environment. Each carboxyl-ate group makes one short Cu-O bond [1.9608 (14) and 1.9701 (14) Å] and one longer Cu-O contact [2.4338 (17) and 2.5541 (17) Å] to each Cu(II) atom. The biphenyl-2,2'-dicarboxyl-ate ligands bridge between Cu(II) atoms, forming a dinuclear complex around a crystallographic inversion centre.
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http://dx.doi.org/10.1107/S1600536809008976 | DOI Listing |
J Colloid Interface Sci
June 2025
College of Environmental Science and Engineering, Hunan University, and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082 Hunan, PR China; Research Institute of Hunan University in Chongqing, Chongqing 401120, PR China.
The development of advanced oxidation processes (AOPs) for environmental remediation has spurred a growing interest in catalysts that selectively generate non-radical species such as singlet oxygen (O). However, the precise engineering of catalytic sites to enhance targeted O production remains a formidable challenge. This study reports a B-doped graphitic carbon nitride-supported Cu single-atom catalyst (CuBCN) that significantly enhances HO activation for efficient O production.
View Article and Find Full Text PDFChemistry
February 2025
CNRS, Institut des Sciences Moleculaires de Marseille, Aix Marseille University, Service 342, Avenue Escadrille Normandie Niemen, 13397, Marseille, FRANCE.
In this study, two copper complexes were synthesized using N3 (arising from two pyridines and one amide group) containing ligands N-(2-picolyl)picolinamide (L1H) and bis(2-pyridylcarbonyl)amine (L2H), forming [(L1)CuII(OH2)(NO3)] (1) and [(L2)CuII(OH2)2](NO3) (2). The reaction of complex 1 with hydrogen peroxide in alcoholic solvents yielded a formate-bound complex. Studies with isotopically labeled 13C ethanol indicated that formate originates from the C1 of ethanol after C-C bond cleavage.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
February 2025
The title salt (systematic name: 2-methyl-4-oxo-3,4-dihydroquinazolin-1-ium chloride), [CuCl(CHN)](ClO), is comprised of a mononuclear complex cation [Cu(phen)Cl] (phen is 1,10-phenanthroline) and a perchlorate anion, ClO , both with point group symmetry 2. The Cu atom has a slightly distorted trigonal-bipyramidal coordination environment, defined by a NCl coordination set with the Cl atom and two N atoms at the equatorial sites. In the crystal, each phen ring is parallel to neighboring phen rings.
View Article and Find Full Text PDFChem Asian J
January 2025
Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb, Croatia.
In order to explore a strategy for synthesizing halogen-bonded metal-organic cocrystals by utilizing metal complexes whose pendant chloride group and the morpholinyl oxygen atom enables halogen bonding, we have synthesized four pentacoordinated Cu(II) and Zn(II) complexes of the MClL general formula (L=imines prepared by the condensation reaction of 4-aminoethylmorpholine with 2-pyridinecarboxyaldehide or 2-acetylpyridine). The prepared metal complexes were further cocrystallized with selected iodoperfluorinated benzenes. Out of 20 combinations, 14 experiments yielded crystals suitable for single-crystal X-ray diffraction.
View Article and Find Full Text PDFIUCrJ
March 2025
Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Radlinského 9, Bratislava, SK-81237, 81237, Slovakia.
The experimental electron density distributions in two coordination compounds - one with a central Cu(I) atom and the other with Cu(II), coordinated by the same biphenyldiimino dithioether (bite) type of ligand - have been obtained from high-resolution X-ray reflection data to model the possible electron predisposition for the redox reaction in blue copper proteins. The bite ligand has been adapted to the conformation required by the central atom.
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