Results 211 to 220 of about 135,415 (266)

Copper(II) complexes of imidazolinone herbicides

Inorganica Chimica Acta, 1997
Abstract The copper(II) complexes formed by the imidazolinone herbicide Imazapyr or (±)-2-4-isopropyl-(4-methyl-5-oxo-2-imidazolin-2-yl)-nicotinic acid (H 2 imz) are described. The compounds isolated in the solid state confirm that Imazapyr is a versatile bipy-like ligand able to chelate the metal ion through two different donor sets.
Liliana Strinna Erre, Eugenio Garribba, Giovanni Micera, Alba Pusino, Daniele Sanna   +4 more
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New copper(II) complexes of Creatinine

Thermochimica Acta, 1999
Abstract The importance of Creatinine in clinical chemistry is well recognized: its level in serum and urine is indicative of renal function (Creatinine Clearance Test) and it is the final metabolic product of Creatine, that participates in energy flow in the muscle tissues.
MATERAZZI, Stefano, GENTILI, Alessandra, CURINI, Roberta, D'ASCENZO, Giuseppe   +3 more
openaire   +1 more source

A phenoxyl radical complex of copper(ii)

Chemical Communications, 2001
A new N,O-bidentate pro-ligand (HL), [ML2] (M = Cu, Zn) and [CuL2][BF4] have been synthesised; [CuL2].4DMF and [CuL2][BF4].2CH2Cl2 have been crystallographically and spectroscopically characterised; these data indicate that [CuL2]+ cations are constituted as [Cu2+(L.)(L-)]+ and involve the phenoxyl radical L..
L, Benisvy, A J, Blake, D, Collison, E S, Davies, C D, Garner, E J, McInnes, J, McMaster, G, Whittaker, C, Wilson   +8 more
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Copper(I) and Copper(II) Complexes of Creatinine

Journal of Coordination Chemistry, 1990
Abstract A Cu(II) complex of creatinine (creat) was prepared, with formula Cu(creat)2Cl2, as well as a Cu(I) creatinine complex, Cu(creat H_1)(EtNH2).H2O(EtNH2 = ethylamine). The Cu(II) adduct is complexed with neutral creatinine and IR evidence suggests a tetrahedral geometry for the complex with bonding to the ring amino nitrogen atom. Diamagnetic Cu(
W. J. Birdsall, Bruce A. Weber
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Copper(II) and copper(I) complexes of benzenecarbothioamides

Transition Metal Chemistry, 1988
Copper(II) salts react with benzenecarbothioamide(BCTA);N,N-dimethylbencenecarbothioamide (DMBCTA) andN,N-diethylbenzenecarbothioamide (DEBCTA) to give complexes with 1∶1, 2∶1, 3∶1 ligand/metal stoichiometric ratios, and a diamagnetic complex [Cu2(DEBCTA)Br4]2 which appears to contains copper(I). These compounds were characterized by elemental analyses,
Azucena Garc�a-Onrubia, Pilar Souza, Jos� R. Masaguer, Agueda Arquero   +3 more
openaire   +1 more source

Histidine-Copper (II) Complexes

Nature, 1959
STABILITY constants are known for copper complexes of most of the naturally occurring α-amino-acids. However, although it is of considerable biochemical interest, the copper–histidine system has not been interpreted in detail. The system is anomalous, probably because, although the metal can co-ordinate to the amino, imidazole or carboxyl groups in ...
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Cyano-bridged Homodinuclear Copper(II) Complexes

Inorganic Chemistry, 2011
The synthesis and structural analysis (single crystal X-ray data) of two mononuclear ([Cu(L(1))(CN)]BF(4) and [Cu(L(3))(CN)](BF(4))) and three related, cyanide-bridged homodinuclear complexes ([{Cu(L(1))}(2)(CN)](BF(4))(3)·1.35 H(2)O, [{Cu(L(2))}(2)(CN)](BF(4))(3) and [{Ni(L(3))}(2)(CN)](BF(4))(3)) with a tetradentate (L(1)) and two isomeric ...
Atanasov, Mihail, Comba, Peter, Hanson, Graeme R., Hausberg, Sascha, Helmle, Stefan, Wadepohl, Hubert   +5 more
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Copper(ii) complexes of rat amylin fragments

Dalton Transactions, 2011
The fragments of rat amylin rIAPP(17-29) (Ac-VRSSNNLGPVLPP-NH(2)), rIAPP(17-22) (Ac-VRSSNN-NH(2)), rIAPP(19-22) (Ac-SSNN-NH(2)) and rIAPP(17-20) (Ac-VRSS-NH(2)) together with the related mutant peptides (Ac-VASS-NH(2) and Ac-VRAA-NH(2)) have been synthesized and their copper(II) complexes studied by potentiometric, UV-Vis, CD and EPR spectroscopic ...
C Kállay, Á Dávid, S Timári, E M Nagy, D Sanna, E Garribba, G Micera, P De Bona, G Pappalardo, E Rizzarelli, I Sóvágó   +10 more
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On the Complexation of Copper (II) Ion with 2‐Hydroxybenzamide

Annali di Chimica, 2007
AbstractThe complexation of the Cu2+ ion with 2‐Hydroxybenzamide (salicylamide, HL) has been studied, at 25 °C, by potentiometric measurements with a glass electrode in NaClO4 media for ionic strength ranging from 0.5 to 3 mol/dm3. The data are consistent with the formation of the complexes CuH‐1(HL)+, CuH‐2(HL)2, Cu2H‐2(HL)22+ and CuH‐2(HL). The minor
PORTO R, FURIA, Emilia
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On the structure of manganese (II)- and copper (II)-histidine complexes

Archives of Biochemistry and Biophysics, 1969
Abstract l -Histidine offers three groups as potential binding sites for metal ions: the imidazole, amino, and carboxylic acid groups. For stereochemical and geometric reasons, Cu(II) can bind strongly to only two of the three groups at a given moment.
H, Sigel, R, Griesser, D B, McCormick
openaire   +2 more sources