Dioxygen Reactivity of Reduced Heme and Heme−Copper Complexes Utilizing Tetraarylporphyrinates Tethered with Both a Pyridyl Axial Ligand andN,N-Bis[2-(2-pyridyl)ethyl]amine Chelate

1999 ◽  
Vol 38 (22) ◽  
pp. 4922-4923 ◽  
Author(s):  
Marie-Aude Kopf ◽  
Kenneth D. Karlin
Keyword(s):  
Copper Complexes ◽  
Axial Ligand ◽  
Dioxygen Reactivity ◽  
Ethyl Amine

Dioxygen Reactivity of Copper and Heme−Copper Complexes Possessing an Imidazole−Phenol Cross-Link

2005 ◽  
Vol 44 (5) ◽  
pp. 1238-1247 ◽  
Author(s):  
Eunsuk Kim ◽  
Kaliappan Kamaraj ◽  
Benedikt Galliker ◽  
Nick D. Rubie ◽  
Pierre Moënne-Loccoz ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Cross Link ◽  
Dioxygen Reactivity

scholarly journals Dioxygen Reactivity of New Bispidine-Copper Complexes

2012 ◽  
Vol 51 (5) ◽  
pp. 2841-2851 ◽  
Author(s):  
Peter Comba ◽  
Christina Haaf ◽  
Stefan Helmle ◽  
Kenneth D. Karlin ◽  
Shanthi Pandian ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Dioxygen Reactivity

Electrochemical behavior and dioxygen reactivity of tripodal dinuclear copper complexes linked by unsaturated rigid spacers

2013 ◽  
Vol 42 (6) ◽  
pp. 2238-2253 ◽  
Author(s):  
Antoine Gomila ◽  
Nicolas Le Poul ◽  
Jean-Michel Kerbaol ◽  
Nathalie Cosquer ◽  
Smaïl Triki ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Copper Complexes ◽  
Dinuclear Copper ◽  
Dioxygen Reactivity

scholarly journals Structure and Reactivity of Copper Complexes Supported by a Bulky Tripodal N4 Ligand: Copper(I)/Dioxygen Reactivity and Formation of a Hydroperoxide Copper(II) Complex

2018 ◽  
Vol 644 (14) ◽  
pp. 780-789 ◽  
Author(s):  
Sayantan Paria ◽  
Takehiro Ohta ◽  
Yuma Morimoto ◽  
Hideki Sugimoto ◽  
Takashi Ogura ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Dioxygen Reactivity

scholarly journals Crystal structure of [bis(2-aminoethyl-κN)(2-{[4-(trifluoromethyl)benzylidene]amino}ethyl)amine-κN]dichloridocopper(II)

2016 ◽  
Vol 72 (1) ◽  
pp. 83-86
Author(s):  
Katherine A. Bussey ◽  
Annie R. Cavalier ◽  
Margaret E. Mraz ◽  
Ashley S. Holderread ◽  
Kayode D. Oshin ◽  
...  
Keyword(s):  
Copper Complexes ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Aromatic Rings ◽  
Bond Lengths ◽  
Pyramidal Geometry ◽  
Jahn Teller ◽  
Square Pyramidal Geometry ◽  
Ethyl Amine ◽  
Van Der Waals Contacts

The CuIIatom in the title compound, [CuCl2(C14H21F3N4)], adopts a coordination geometry that is between distorted square-based pyramidal and very Jahn–Teller-elongated octahedral. It is coordinated by three N atoms from the bis(2-aminoethyl)(2-{[4-(trifluoromethyl)benzylidene]amino}ethyl)amine and two chloride ligands. The two crystallographically unique copper complexes present in the asymmetric unit exhibit noticeable differences in the coordination bond lengths. Considering the CuIIatoms as having square-pyramidal geometry, the basal Cu—Cl bond lengths are typical [2.2701 (12) and 2.2777 (12) Å], while the apical distances are considerably elongated [2.8505 (12) and 2.9415 (12) Å]. For each molecule, a CuIIatom from inversion-related molecules are in nearby proximity to the remaining axial CuIIsites, but the Cu...Cl distances are very long [3.4056 (12) and 3.1645 (12) Å], attributable to van der Waals contacts. Nonetheless, these contacts appear to have some structure-directing properties, leading to association into dimers. These dimers associateviastacking of the aromatic rings to form extended zigzag chains.

Electrochemistry and spectroelectrochemistry of tetra-α-substituted metallophthalocyanines

2008 ◽  
Vol 12 (10) ◽  
pp. 1123-1133 ◽  
Author(s):  
Zhongping Ou ◽  
Zhou Jiang ◽  
Naisheng Chen ◽  
Jinling Huang ◽  
Jing Shen ◽  
...  
Keyword(s):  
Metal Ion ◽  
Copper Complexes ◽  
Visible Spectrum ◽  
Axial Ligand ◽  
Central Metal ◽  
Nonaqueous Media ◽  
Cation Radicals ◽  
Cobalt Nickel ◽  
Uv Visible ◽  
Electron Donating Groups

Four tetra-α-substituted phthalocyanines, represented as [( OR )4 Pc ] M where OR is 2,2,4-tri-methyl-3-pentoxy and M = Co (II), Ni (II), Cu (II) or Zn (II), were investigated as to their electrochemistry, UV-visible and ESR spectroscopy. The electron-donating groups on the four α-positions of the phthalocyanine macrocycles lead to a 40 nm red-shift in the position of the most intense band in the UV-visible spectrum as compared to the unsubstituted ( Pc ) M derivative with the same central metal ion under the same solution conditions. The cobalt, nickel and copper complexes of [( OR )4 Pc ] M are soluble in nonaqueous media and show no evidence for aggregation at the millimolar concentration levels needed for electrochemical measurements. The Zn (II) complex aggregates in DMF at these concentrations but monomers are formed upon diluting the solution or by adding a complexing axial ligand such as pyridine. The first reduction and first oxidation of [( OR )4 Pc ] Co (II) leads to formation of a Co (I) and Co (III) phthalocyanine and this contrasts with the first reduction and first oxidation of the Ni (II), Cu (II) and Zn (II) derivatives where electron addition and electron abstraction occur at the conjugated macrocycle, leading to π-anion and π-cation radicals, respectively.

Steric hindrance influence of a diazo link upon mesogenic properties of some ligands and related copper complexes

1997 ◽  
Vol 94 ◽  
pp. 1695-1714 ◽  
Author(s):  
P Lesot ◽  
F Perez ◽  
P Judeinstein ◽  
JP Bayle ◽  
H Allouchi ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
Copper Complexes
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