The title compound, [Co(CHN)(CHN)](BF), is a five-coordinate Co complex based on the neutral ligands tris-[(1-benzyl-triazol-4-yl)meth-yl]amine (tbta) and imidazole. It exhibits a distorted trigonal bipyramidal geometry in which the equatorial positions are occupied by the three N-atom donors from the triazole rings of the tripodal tbta ligand. The apical amine N-atom donor of tbta and the N-atom donor of the imidazole ligand occupy the axial positions of the coordination sphere. Two tetra-fluoro-borate anions provide charge balance in the crystal.
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http://dx.doi.org/10.1107/S205698902400330X | DOI Listing |
Inorg Chem
January 2025
Department of Material and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden.
Zinc oxide (ZnO) is a semiconductor with a wide range of applications, and often the properties are modified by metal-ion doping. The distribution of dopant atoms within the ZnO crystal strongly affects the optical and magnetic properties, making it crucial to comprehend the structure down to the atomic level. Our study reveals the dopant structure and its contents in Eu-doped ZnO nanosponges with up to 20% Eu-O clusters.
View Article and Find Full Text PDFACS Omega
December 2024
Departamento de Química, Instituto Tecnológico de Aeronáutica, São José dos Campos, São Paulo CEP 12228-900, Brazil.
The five-coordinate complex [RuCl(PNP)] () was synthesized from the binuclear [RuCl(-cym)] with a PNP-type ligand (PNP = 3,6-di--butyl-1,8-bis(dipropylphosphino)methyl)-9-carbazole - (Cbzdiphos )H) in a toluene solution, within 20 h at 110 °C, producing a green solid, which was precipitated with a 1/1 mixture of - pentane/HMDSO. The complex was characterized by NMR-H, C, and P{H}, mass spectroscopy-LIFDI, FTIR, UV/vis spectroscopy, and cyclic voltammetry, as well as a description of the optimized structure by DFT calculation. The reactivity of was investigated in the presence of potassium triethylborohydride (KBEtH, in THF solution of 1.
View Article and Find Full Text PDFJ Biol Inorg Chem
December 2024
Department of Chemical Engineering, Wolfson Centre for Sustainable Materials Processing and Development, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK.
Mössbauer parameters of low-spin six-coordinate [Fe(II)(Por)L] complexes (where Por is a synthetic porphyrin; L is a nitrogenous aliphatic, an aromatic base or a heterocyclic ligand, a P-bonding ligand, CO or CN) and low-spin [Fe(Por)LX] complexes (where L and X are different ligands) are reported. A known point charge calculation approach was extended to investigate how the axial ligands and the four porphyrinato-N atoms generate the observed quadrupole splittings (ΔE) for the complexes. Partial quadrupole splitting (p.
View Article and Find Full Text PDFIUCrdata
August 2024
Department of Chemistry and Biochemistry Fordham University, 441 East Fordham Road Bronx NY 10458 USA.
The title structure, {[Cu(CHNO)][Cu(CN)]·[Cu(CHNO)(HO)]·HO} , is made up of diperiodic honeycomb CuCN networks built from [Cu(CN)] units, together with two independent Cu complexes: six-coord-inate [Cu(CHCHCH(NH)CHOH)] cations, and five-coordinate [Cu(CHCHCH(NH)CHO)·HO] neutral species. The two Cu complexes are not covalently bonded to the CuCN networks. Strong O-H⋯O hydrogen bonds link the Cu complexes into pairs and the pairs are hydrogen bonded into chains along the crystallographic axis the hydrate water mol-ecule.
View Article and Find Full Text PDFJ Am Chem Soc
August 2024
Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore.
Although the reactivity of five-coordinate end-on superoxocopper(II) complexes, Cu(η-O), is dominated by hydrogen atom transfer, the majority of four-coordinate Cu(η-O) complexes published thus far display nucleophilic reactivity. To investigate the origin of this difference, we have developed a four-coordinate end-on superoxocopper(II) complex supported by a sterically encumbered bis(2-pyridylmethyl)amine ligand, dpb-BPA (), and compared its substrate reactivity with that of a five-coordinate end-on superoxocopper(II) complex ligated by a similarly substituted tris(2-pyridylmethyl)amine, dpb-TMPA (). Kinetic isotope effect (KIE) measurements and correlation of second-order rate constants ('s) versus oxidation potentials () for a range of phenols indicates that the complex [Cu(η-O)()] reacts with phenols via a similar hydrogen atom transfer (HAT) mechanism to [Cu(η-O)()].
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