Articles with "cuii" as a keyword



An Engineered β‐Hairpin Peptide Forming Thermostable Complexes with ZnII, NiII, and CuII through a His3 Site

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Published in 2022 at "Chembiochem"

DOI: 10.1002/cbic.202200588

Abstract: The three‐dimensional structure of a peptide, which determines its function, can denature at elevated temperatures, in the presence of chaotropic reagents, or in organic solvents. These factors limit the applicability of peptides. Herein, we present… read more here.

Keywords: hairpin peptide; spectroscopy; geometry; engineered hairpin ... See more keywords

Two-dimensional catena–polymer [[[bis (µ-aqua)(bis (µ-cpiap-K2O:O)sodium(I))] (µ-chlorido) bis(µ-cpiap-KN:O:O:O,O)dicopper(II)]bis(µ-aqua)(aqua)bis(cpiap-K2O,O)copper(II)] hexa hydrate

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Published in 2020 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2020.03.006

Abstract: Abstract The new title two-dimensional hetero-tetra nuclear Cu3–Na coordination polymer {[NaCu3Cl(cpiap)2(H2O)3]n·6nH2O} (1) consists of crystallographically two-independent copper(II) centers, each bridged by a sodium cation through carboxylate-oxygen of the deprotonated H3cpiap ligand (H3cpiap = 2-(carboxyphenyl)iminoaceticpropanoic acid) to CuII… read more here.

Keywords: cpiap; bis cpiap; bis; bis aqua ... See more keywords

Electronic Structure and Reactivity Studies of a Nonsymmetric One-Electron Oxidized CuII Bis-phenoxide Complex.

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Published in 2018 at "Inorganica chimica acta"

DOI: 10.1016/j.ica.2017.09.042

Abstract: The tetradentate mixed imino/amino phenoxide ligand (N-(3,5-di-tert-butylsalicylidene)-N'-(2-hydroxyl-3,5-di-tert-butylbenzyl))-trans-1,2-cyclohexanediamine (salalen) was complexed with CuII, and the resulting Cu complex (2) was characterized by a number of experimental techniques and theoretical calculations. Two quasi-reversible redox processes for 2,… read more here.

Keywords: oxidized cuii; electronic structure; one electron; electron ... See more keywords

Syntheses, structures, and magnetic properties of a cubane-like {Co4O4} cluster and a dinuclear CuII compound constructed from a tridentate Schiff base ligand

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Published in 2017 at "Polyhedron"

DOI: 10.1016/j.poly.2016.10.025

Abstract: Abstract The employment of a tridentate Schiff base ligand, 1-(((2-hydroxy-2,3-dihydro-1H-inden-1-yl)imino)methyl)naphthalen-2-ol (H2L) in the coordination chemistry of cobalt(II) acetate and copper(II) acetate is reported. One cubane-like cluster of formula [Co4L4]·CH3OH (1·CH3OH) and one alkoxo-bridged dinuclear copper… read more here.

Keywords: cubane like; tridentate schiff; base ligand; like co4o4 ... See more keywords

Family of Isomeric CuII-LnIII (Ln = Gd, Tb, and Dy) Complexes Presenting Field-Induced Slow Relaxation of Magnetization Only for the Members Containing GdIII.

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Published in 2020 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.0c03129

Abstract: The strategic design and synthesis of two isomeric CuII complexes, [CuLA] and [CuLB], of asymmetrically dicondensed N2O3-donor Schiff-base ligands (where H2LA and H2LB are N-salicylidene-N'-3-methoxysalicylidenepropane-1,2-diamine and N-3-methoxysalicylidene-N'-salicylidenepropane-1,2-diamine, respectively) have been accomplished via a convenient CuII… read more here.

Keywords: field induced; relaxation; isomeric cuii; slow relaxation ... See more keywords

Dual Role of Glutathione as a Reducing Agent and Cu-Ligand Governs the ROS Production by Anticancer Cu-Thiosemicarbazone Complexes

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Published in 2023 at "Inorganic Chemistry"

DOI: 10.1021/acs.inorgchem.2c04392

Abstract: α-Pyridyl thiosemicarbazones (TSC) such as Triapine (3AP) and Dp44mT are a promising class of anticancer agents. Contrary to Triapine, Dp44mT showed a pronounced synergism with CuII, which may be due to the generation of reactive… read more here.

Keywords: cuii; ros production; dp44mt; glutathione ... See more keywords

Generation and Reactivity of μ-1,2-Peroxo CuIICuII and Bis-μ-oxo CuIIICuIII Species and Catalytic Hydroxylation of Benzene to Phenol with Hydrogen Peroxide.

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Published in 2024 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.3c03914

Abstract: Tetradentate-N4 ligands stabilize dinuclear {CuII(μ-1,2-peroxo)CuII} and {CuIII(μ-O)2CuIII} species, and CuII complexes of these ligands were reported to catalyze the oxidation of benzene with H2O2. Here, we report {CuII(μ-1,2-peroxo)CuII} and {CuIII(μ-O)2CuIII} intermediates of dinucleating bis(tetradentate-N4) ligands… read more here.

Keywords: cuii; bis; reactivity; hydroxylation benzene ... See more keywords

Copper(II) Carbaporphyrins: Oxygenation Reactivities Dependent upon Coordinating Structures.

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Published in 2024 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.3c04230

Abstract: CuII metalations of carbaporphyrins 1-4 gave the corresponding CuII complexes 1-Cu, 2-Cu, 3-Cu, and 4-Cu with varying degrees of distortions in CuII square-planar coordination. Upon treatment with Cu(OAc)2, 1-Cu was inert but 2-Cu and 3-Cu… read more here.

Keywords: treatment; cuii; carbaporphyrins oxygenation; oxygenation reactivities ... See more keywords

Transmetalation for Flexible Pendant-Armed Schiff-Base Macrocyclic Complexes Influenced by Halide Effects.

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Published in 2018 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.7b02835

Abstract: Three 46-membered [2 + 2] pendant-armed Schiff-base macrocyclic dinuclear CdII and CuII complexes (2a, 2b, and 3b) and one 23-membered [1 + 1] CuII macrocycle 4a were prepared from the template-directed condensation reactions between 1,2-bis(2-aminoethoxy)-ethane… read more here.

Keywords: transmetalation; znii; macrocyclic complexes; cdii ... See more keywords

Irradiation Temperature Dependence of the Photomagnetic Mechanisms in a Cyanido-Bridged CuII2MoIV Trinuclear Molecule.

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Published in 2018 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.8b00545

Abstract: We report a new bimetallic cyanido-bridged trinuclear complex [CuII(enpnen)]2[MoIV(CN)8]·6.75H2O (1) (enpnen = N,N'-bis(2-aminoethyl)-1,3-propanediamine) that shows reversible photomagnetic effect. The photo-induced increase of magnetization is characterized by the irradiation temperature-dependent shapes of the χM T( T)… read more here.

Keywords: temperature; effect; irradiation temperature; cuii ... See more keywords

In Situ Reactivity of Electrochemically Generated Nitro Radical Anion on Tinidazole and Its Monomeric and Dimeric CuII Complexes on Model Biological Targets with Relative Manifestation of Preventing Bacterial Biofilm Formation

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.1c04822

Abstract: Formation of nitro radical anion (−NO2•–) and other reduction products of 5-nitroimidazoles, although important for antimicrobial activity, makes the drugs neurotoxic. Hence, an appropriate generation and their role in the free radical pathway needs proper… read more here.

Keywords: dna; cuii; biofilm formation; cuii complexes ... See more keywords