نتایج جستجو برای: جذب (Cu(II

تعداد نتایج: 30726  

Journal: :Chemical science 2017
Brandon E Haines Takahiro Kawakami Keiko Kuwata Kei Murakami Kenichiro Itami Djamaladdin G Musaev

The LCuBr-catalyzed C-H imidation of arenes by N-fluorobenzenesulfonimide (NFSI), previously reported by us, utilizes an inexpensive catalyst and is applicable to a broad scope of complex arenes. The computational and experimental study reported here shows that the mechanism of the reaction is comprised of two parts: (1) generation of the active dinuclear CuII-CuII catalyst; and (2) the catalyt...

2017
Peter W R Corfield Alexander Sabatino

The crystal structures of two mixed-valence copper cyanide compounds involving N-methyl-ethylenedi-amine (meen), are described. In compound (I), poly[bis(μ3-cyanido-κ3C:C:N)tris(μ2-cyanido-κ2C:N)bis(N-methylethane-1,2-di-amine-κ2N,N')tricopper(I)copper(II)], [Cu4(CN)5(C3H10N2)2] or Cu4(CN)5meen2, cyanide groups link CuI atoms into a three-dimensional network containing open channels parallel to...

Journal: :Dalton transactions 2016
Sven Wiesner Arne Wagner Elisabeth Kaifer Hans-Jörg Himmel

The electronic structures of dinuclear copper complexes of the general formula [GFA(CuX2)2], where X = Br or Cl and GFA denotes a redox-active bridging Guanidino-Functionalized Aromatic ligand, were analysed and compared. The diamagnetic complexes [GFA(CuBr2)2] can all be described as dinuclear CuI complexes with bridging GFA2+ dicationic ligand units exhibiting a [CuI-GFA2+-CuI] electronic str...

Journal: :Dalton transactions 2008
Ki-Min Park Sanjina Lee Youngjin Kang Suk-Hee Moon Shim Sung Lee

From the reaction of CuICN with conc-NH4OH, a host-guest type 3D network complex , [[CuII(NH3)4(H2O)](H2O)@[CuI3(CN)5]]n was isolated and characterised. A unique cationic complex guest [CuII(NH3)4(H2O)]2+ is encapsulated in the anionic host cage [CuI3(CN)5]2-.

2017
James B. Hilton Stephen W. Mercer Nastasia K. H. Lim Noel G. Faux Gojko Buncic Joseph S. Beckman Blaine R. Roberts Paul S. Donnelly Anthony R. White Peter J. Crouch

Ubiquitous expression of mutant Cu/Zn-superoxide dismutase (SOD1) selectively affects motor neurons in the central nervous system (CNS), causing the adult-onset degenerative disease amyotrophic lateral sclerosis (ALS). The CNS-specific impact of ubiquitous mutant SOD1 expression is recapitulated in transgenic mouse models of the disease. Here we present outcomes for the metallo-complex CuII(ats...

Journal: :European Journal of Inorganic Chemistry 2022

Nitrous acid (HONO) plays pivotal roles in various metal-free as well metal-mediated routes relevant to biogeochemistry, atmospheric chemistry, and mammalian physiology. While the metastable nature of HONO hinders detailed investigations into its reactivity at a transition metal site, this report herein utilizes heteroditopic copper(II) cryptate [oC]CuII featuring proton-responsive second-coord...

2008
Youngjune Kim Robert J. Birgeneau Fangcheng Chou Martin Greven Marc A. Kastner Youngsu Lee Barrett O. Wells Amnon Aharony Gen Shirane Y. J. Kim R. J. Birgeneau F. C. Chou M. Greven M. A. Kastner Y. S. Lee B. O. Wells A. B. Harris

We report a neutron scattering study on the tetragonal compound Sr2Cu3O4Cl2, which has two-dimensional (2D) interpenetrating CuI and CuII subsystems, each forming a S=1/2 square lattice quantum Heisenberg antiferromagnet (SLQHA). The mean-field ground state is degenerate, since the intersubsystem interactions are geometrically frustrated. Magnetic neutron scattering experiments show that quantu...

2016
Jian-Rong Su Yu Li

The title hydrated complex, [Cu2(C7H4O3)(C12H8N2)4](C7H5O3)2·7.5H2O, is composed of dinuclear CuII complex cations, noncoordinating 4-hy-droxy-benzoate anions and water mol-ecules of crystallization. In the dinuclear complex cation, the CuII ions are bridged by a 4-oxidobenzoate ligand and thus each metal ion is five-coordinated by two chelating 1,10-phenanthroline (phen) mol-ecules and one ani...

Journal: :Chemical & pharmaceutical bulletin 2000
A A el-Asmy M E Khalifa T H Rakha M M Hassanian A M Abdallah

Complexes of several transition metal ions with alpha-oximinoacetoacetyl pyridine-4-phenylthiosemicarbazone (H3OAPT) have been prepared. Attempts were made to elucidate their geometries by elemental analysis, molar conductance, magnetic measurements and by some spectroscopic (IR, ESR and electronic) techniques. All the investigated metal ions form mononuclear complexes except for CuII, which fo...

Journal: :The Journal of biological chemistry 2011
Cynthia P W Soon Paul S Donnelly Bradley J Turner Lin W Hung Peter J Crouch Nicki A Sherratt Jiang-Li Tan Nastasia K-H Lim Linh Lam Laura Bica SinChun Lim James L Hickey Julia Morizzi Andrew Powell David I Finkelstein Janetta G Culvenor Colin L Masters James Duce Anthony R White Kevin J Barnham Qiao-Xin Li

Amyotrophic lateral sclerosis (ALS) is a progressive paralyzing disease characterized by tissue oxidative damage and motor neuron degeneration. This study investigated the in vivo effect of diacetylbis(N(4)-methylthiosemicarbazonato) copper(II) (CuII(atsm)), which is an orally bioavailable, blood-brain barrier-permeable complex. In vitro the compound inhibits the action of peroxynitrite on Cu,Z...

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