Results 161 to 170 of about 1,611,834 (207)

Characterization of imidazolate-bridged Cu(ii)–Zn(ii) heterodinuclear and Cu(ii)–Cu(ii) homodinuclear hydroperoxo complexes as reaction intermediate models of Cu,Zn–SOD

Chemical Communications, 2000
Imidazolate-bridged Cu(II)–Zn(II) heterodinuclear and Cu(II)–Cu(II) homodinuclear hydroperoxo complexes are generated in the reactions between imidazolate-bridged heterodinuclear and homodinuclear complexes and H2O2 in the presence of triethylamine base and characterized spectroscopically as reaction intermediate models of Cu,Zn–SOD.
Hideki Ohtsu, Shunichi Fukuzumi, Shinobu Itoh, Shigenori Nagatomo, Teizo Kitagawa, Seiji Ogo, Yoshihito Watanabe   +6 more
openaire   +1 more source

Synthesis, structure and biomimetic properties of Cu(II)–Cu(II) and Cu(II)–Zn(II) binuclear complexes: possible models for the chemistry of Cu–Zn superoxide dismutase

Journal of Inorganic Biochemistry, 2005
Four imidazolate-bridged binuclear copper(II)-copper(II) and copper(II)-zinc(II) complexes viz., [(Bipy)(2)Cu-Im-Cu(Bipy)(2)](ClO(4))(3).CH(3)OH, [(Phen)(2)Cu-Im-Cu(Phen)(2)](BF(4))(3).2CH(3)OH, [(Bipy)(2)Cu-Im-Zn(Bipy)(2)](BF(4))(3), and [(Phen)(2)Cu-Im-Zn(Phen)(2)](BF(4))(3), (Bipy=2,2'-Bipyridyl, Phen=1-10-Phenanthroline and Im=imidazolate ion) were
R N, Patel, Nripendra, Singh, K K, Shukla, V L N, Gundla, U K, Chauhan   +4 more
openaire   +2 more sources

???????????????????????????????????????????? ???????????????? ???????????????????????????????????????? Cu (II) ?? ????????????????????????????????????????????????

2022
The complexes formation in system Cu (II)???edds at equimolar proportional and ??Cu(II) =1??10????? ?? by method of electronic spectroscopy, was investigated. At others pH of solution formation of dimeric forms was observed. The constants of stabilities and diagram of distribution was calculated.
openaire   +3 more sources

Synthesis and Crystal Structure of Dissymmetrical Double Schiff Base Cu(II) Homobinuclear and Cu(II)‐Mg(II)‐Cu(II) Heterotrinuclear Complexes

Chinese Journal of Chemistry, 2006
AbstractHomobinuclear complex (HCuL)2 (1) (H3L: N‐3‐carboxylsalicylidene‐N′‐salicylaldehyde‐1,2‐diaminoethane) was obtained from self‐organization of the reported complex HCuL, and its crystal structure was determined through X‐ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326(5) nm,
Ruo‐Jie Tao, Chong‐Zhen Mei, Bing‐Tao Liu, Jing‐Yang Niu   +3 more
openaire   +1 more source

Thermal Splitting of Bis-Cu(II) Octaphyrin(1.1.1.1.1.1.1.1) into Two Cu(II) Porphyrins

Journal of the American Chemical Society, 2004
When heated, bis-Cu(II) octaphyrin(1.1.1.1.1.1.1.1) is quantitatively split into two Cu(II) porphyrins both in solution and film states, which is accompanied by large absorption spectral changes.
Tanaka, Y, Hoshino, W, Shimizu, S, Youfu, K, Aratani, N, Maruyama, N, Fujita, S, Osuka, A   +7 more
openaire   +2 more sources

On Cu(II)–Cu(II) distance measurements using pulsed electron electron double resonance

Journal of Magnetic Resonance, 2007
The effects of orientational selectivity on the 4-pulse electron electron double resonance (PELDOR) ESR spectra of coupled Cu(II)-Cu(II) spins are presented. The data were collected at four magnetic fields on a poly-proline peptide containing two Cu(II) centers.
Zhongyu, Yang, James, Becker, Sunil, Saxena   +2 more
openaire   +2 more sources

Molecular Cu^II‐O‐Cu^IIComplexes: Still Waters Run Deep

Angewandte Chemie International Edition, 2014
AbstractResearch on O2activation at ligated CuIis fueled by its biological relevance and the quest for efficient oxidation catalysts. A rarely observed reaction is the formation of a CuII‐O‐CuIIspecies, which is more special than it appears at first sight: a single oxo ligand between two CuIIcenters experiences considerable electron density, and this ...
Peter, Haack, Christian, Limberg
openaire   +2 more sources

Ratiometric and selective fluorescent chemodosimeter for Cu(II) by Cu(II)‐induced oxidation

Luminescence, 2008
AbstractA new rhodamine derivative, rhodamine B 4‐N,N‐dimethylaminobenzaldehyde hydrazone (1), was designed for ratiometric sensing of Cu(II) selectively. A red‐shift from 515 to 585 nm was observed in the fluorescence spectrum when Cu(II) was added to 1 in acetonitrile. Other metal ions of interest showed no ratiometric response.
Yu, Xiang, Aijun, Tong
openaire   +2 more sources