Results 221 to 230 of about 19,353 (259)

SYNTHESIS AND CHARACTERIZATION OF SOME THIOCYANATO COMPLEXES OF Ni(II), Cu(II), Pd(II), Pt(II), Au(III), Ti(III), AND V(IV) CONTAINING A TRIDENTATE SCHIFF BASE LIGAND

Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 2002
ABSTRACT A tridentate ligand HL having a ONN donor sequence has been synthesised by the condensation of ethylenediamine with salicylaldehyde. The ligand undergoes deprotonation during complexation and forms complexes of the compositions, [M(L)(SCN)], [M=Ni(II), Cu(II), Pd(II) and Pt(II), L=deprotonated Schiff base], K[Ti(L)(SCN)3], [Au(L)-(SCN)]Cl and ...
M. Saidul Islam, M. Akhter Farooque, M. A. K. Bodruddoza   +2 more
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Voltammetric and EQCM Studies on Selenium(IV) at Mercury, Gold and Glassy Carbon Electrodes in the Presence of Cu(II), Au(III), Pb(II) and Cd(II)

Electroanalysis, 1998
Cyclic voltammetry (CV), adsorptive stripping voltammetry (AdSV) and electrochemical quartz crystal microbalance (EQCM) were employed to study the behavior of selenium(IV) at the mercury, gold and glassy carbon electrodes. Optimum measurement parameters and stock solution compositions were established. Selenium(IV) was studied in the presence of copper,
Zbigniew Fijaľek, Anna Ľozak, Katarzyna Sarna   +2 more
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Schiff‐Basen aus 1,3‐Dicarbonylverbindungen und Triaminen und ihre Fe (III)‐, Co (III)‐, Ni(II)‐ und Cu(II)‐Komplexe

Helvetica Chimica Acta, 1978
Schiff bases of 1,3‐dicarbonyl compounds with triamines and their Fe(III), Co(III), Ni(II) and Cu(II) complexesThe preparation of new hexadentate ligands obtained by the reaction of cis, cis‐1,3,5‐triaminocyclohexane (tach) or 1,1,1‐tris (aminomethyl)ethane (tame) with an 2‐ethoxymethylidene‐1,3‐dicarbonyl compound as well as their Fe(III), Co(III), Ni(
Jean‐Rodolphe Flückiger, Carl Wilhelm Schläpfer   +1 more
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Innocence and noninnocence of the ligands in bis(pyrazine-2,3-dithiolate and -diselonate) d8-metal complexes. A theoretical and experimental study for the Cu(iii), Au(iii) and Ni(ii) cases

Dalton Transactions, 2010
In the paper are described experimental and theoretical studies to investigate the electronic structures of [ML2]- (M(III) = Cu, L = pdt and pds, pyrazine-2,3-dithiolate and -diselonate; M(III) = Au, L = pds) with the aim of elucidating the nature of the bonding and to establish the innocent–noninnocent character of the ligand in these complexes ...
G. Bruno, M. Almeida, ARTIZZU, FLAVIA, J. C. Dias, MERCURI, MARIA LAURA, PILIA, LUCA, C. Rovira, X. Ribas, SERPE, ANGELA, DEPLANO, PAOLA   +9 more
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Effects of Ag^I, Au^III, and Cu^IIon the Reductive Dechlorination of Carbon Tetrachloride by Green Rust

Environmental Science & Technology, 2003
Green rusts (GRs), mixed iron(II)/iron(III) hydroxide minerals found in many suboxic environments, have been shown to reduce a range of organic and inorganic contaminants, including several chlorinated hydrocarbons. Many studies have demonstrated the catalytic activity of transition metal species in the reduction of chlorinated hydrocarbons, suggesting
Edward J, O'Loughlin, Kenneth M, Kemner, David R, Burris   +2 more
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New Cu(II), Pd(II), and Au(III) Complexes with 2-Thiouracil: Synthesis, Characteration, and Antibacterial Studies

Russian Journal of General Chemistry, 2022
Slavchev, Aleksandar, Blazheva, Denica, Penchev, P., Tsoneva, S., Marinova, Petya, Frenkeva, M.   +5 more
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Synthesis, characterization and anticancer activity of Ni(II), Cu(II), Pd(II) and Au(III) complexes derived from novel Mannich base

Vietnam Journal of Chemistry
AbstractNew four complexes of Ni(II), Cu(II), Pd(II), and Au(III) were derived from the tridentate ligand 3‐((3‐(4‐hydroxyphenyl)‐5‐mercapto‐4H‐1,2,4‐triazol‐4‐yl)(3‐oxobutyl)amino)naphtho[2,3‐b]furan‐2(3H)‐one (L), which synthesized using condensation reaction of formaldehyde, acetone, and secondary amine (Mannich reaction).
Tamara Q. Manhee, Ammar J. Alabdali
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Spectroscopy, electrochemistry and antiproliferative properties of Au(iii), Pt(ii) and Cu(ii) complexes bearing modified 2,2':6',2''-terpyridine ligands.

Dalton transactions (Cambridge, England : 2003), 2018
Structural, spectroscopic and electrochemical properties of six complexes [AuCl(L1)](PF6)2·CH3CN (1), [AuCl(L2)](PF6)2 (2), [PtCl(L1)](BPh4)·CH3CN (3), [PtCl(L2)](SO3CF3) (4), [CuCl2(L1)] (5) and [CuCl2(L2)]·CH3CN (6) with modified 2,2':6',2''-terpyridine ligands, 4'-(4-methoxyphenyl)-2,2':6',2''-terpyridine (L1) and 4'-(4-methoxynaphthalen-1-yl)-2,2 ...
Anna, Maroń, Katarzyna, Czerwińska, Barbara, Machura, Luis, Raposo, Catarina, Roma-Rodrigues, Alexandra R, Fernandes, Jan G, Małecki, Agata, Szlapa-Kula, Slawomir, Kula, Stanisław, Krompiec   +9 more
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Electrochemical Redox of Arsenic (Iii) and Cu (Ii) Mixtures with Ultraflat Au(111) Thin Films in Water

Electrochimica Acta, 2023
Tybur Q. Casuse-Driovínto, Angelica Benavidez, Noah Jemison, José M. Cerrato, Juan Feliu, Fernando H. Garzón   +5 more
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Simultaneous determination of Au(III) and Cu(II) with 1-phenyl-1,2-propanedione-2-oximethiosemicarbazone (PPDOT) on solid phase

Minerals Engineering, 2007
Abstract A new method for the simultaneous determination of copper and gold was developed by derivative spectrophotometry using a previous preconcentration on solid phase. The method is based on the formation of Cu(II)-PPDOT and Au(III)-PPDOT complexes that are extracted from aqueous solution in only 20 min on cationic exchange SP Sephadex C25.
Libby Morales, M. Inés Toral
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