Syntheses, structures and catecholase activities of homo‐ and hetero‐trinuclear cobalt(II) complexes constructed from an acyclic naphthalenediol‐based bis(Salamo)‐type ligand
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DOI: 10.1002/aoc.3818
Abstract: A series of homo- and hetero-trinuclear cobalt(II) complexes [Co3(L)(OAc)2(CH3CH2OH)(H2O)] (1), [Co2Ba(L)(OAc)2] (2) and [Co2Ca(L)(OAc)2]·CHCl3 (3), containing an acyclic naphthalenediol-based ligand H4L were synthesized. All the three complexes were characterized by elemental analyses, IR, UV–vis spectra… read more here.
Keywords: trinuclear cobalt; cobalt complexes; homo hetero; acyclic naphthalenediol ... See more keywords
Experimental and theoretical studies of new Co(III) complexes of hydrazide derivatives proposed as multi‐target inhibitors of SARS‐CoV‐2
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DOI: 10.1002/aoc.6836
Abstract: Cobalt(III) complexes with Schiff base ligands derived from hydrazone, (HL 1 = (E)‐N′‐(3,5‐dichloro‐2‐hydroxybenzylidene)‐4‐hydroxybenzohydrazide, HL 2 = (E)‐N′‐(3,5‐dichloro‐2‐hydroxybenzylidene)‐4‐hydroxybenzohydrazide (3,5‐dibromo‐2‐hydroxybenzylidene), and HL 3 = (E)‐4‐hydroxy‐N′‐(2‐hydroxy‐3‐ethoxybenzylidene)benzohydrazide), were synthesized and characterized by elemental analysis, Fourier transform infrared (FT‐IR) spectroscopy, UV–Vis spectroscopy, and… read more here.
Keywords: experimental theoretical; iii complexes; spectroscopy; iii ... See more keywords
Dinuclear Cobalt Complexes for Homogeneous Water Oxidation: Tuning Rate and Overpotential Through the Non-Innocent Ligand.
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DOI: 10.1002/cssc.202201317
Abstract: In this study, dinuclear cobalt complexes ( 1 and 2 ) featuring bisbenzimidazolepyrazolide-type ligands ( H 2 L and Me 2 L ) were prepared and evaluated as molecular electrocatalysts for water oxidation. Notably, 1… read more here.
Keywords: water oxidation; water; dinuclear cobalt; rate ... See more keywords
Metformin-Derived Water-Soluble Cobalt Complexes: Thermal, Spectroscopic, DNA Interaction, and Molecular Docking Studies
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DOI: 10.1007/s12010-022-03862-3
Abstract: Novel three water-soluble cobalt (II) complexes of type [Co(metf)(o-phen)2]Cl2 (1), [Co(metf)(opda)2]Cl2 (2), and [Co(metf)(2–2′bipy)2]Cl2 (3) (Metf, metformin; o-phen, ortho-phenanthroline; opda, ortho-phenylenediamine; 2,2′-bipy, 2,2′-bipyridine) were synthesized and characterized by various analytical and spectral techniques. Based on… read more here.
Keywords: dna; water soluble; spectroscopy; interaction ... See more keywords
Syntheses and crystal structure of copper (II) and cobalt (II) complexes containing N-heterocyclic compounds
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DOI: 10.1007/s13738-017-1242-6
Abstract: Four Cu(II) and Co(II) complexes with N-containing heterocycles as ligands were reported firstly. In a simple method, the reaction of 2-benzenediacetonitrile and pyridine-2-carboxaldehyde 2-quinolylhydrazone with Cu(OAc)2·H2O afforded the copper(II) complexes I–II, and addition of 2-(2-pyridyl)-1-(2-thiazolylazo)-2-naphthol… read more here.
Keywords: syntheses crystal; copper; cobalt complexes; spectroscopy ... See more keywords
Cobalt(II) complexes with small variations in the heterocycle ligand, crystal structure and DFT calculations
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DOI: 10.1016/j.molstruc.2021.129911
Abstract: Abstract Novel mononuclear cobalt(II) complexes, [Co(mbipy)(H2O)(η2-NO3)(η-NO3)] (1), [Co(dmbipy)(H2O)(η2-NO3)(η-NO3)] (2) and [Co(dmphen)(H2O)(η2-NO3)(η-NO3)] (3) were synthesized by the reactions of Co(NO3)2·6H2O with bipyridine and phenanthroline derivatives (mbipy = 6-methyl-2,2-bypiridine; dmbipy = 6,6-dimethyl-2,2-bypiridine and dmphen = 2,9-dimethyl-1,10-phenanthroline). The complexes were identified by elemental analysis,… read more here.
Keywords: h2o no3; structure; crystal structure; cobalt complexes ... See more keywords
Revisiting the 2-imino-1,10-phenanthrolylmetal precatalyst in ethylene oligomerization: Benzhydryl-modified cobalt(II) complexes and their dimerization of ethylene
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DOI: 10.1016/j.poly.2020.114865
Abstract: Abstract The ortho-benzhydryl substituted 2-imino-1,10-phenanthrolylcobalt(II) dichlorides Co1-Co8 have been prepared by the direct reaction of the corresponding compartmental ligands L1–L8 and cobalt(II) chloride with good yields. All the organic compounds (L1–L8) have been fully characterized… read more here.
Keywords: dimerization; imino; cobalt complexes; spectroscopy ... See more keywords
Cobalt(II) complexes derived from a 2-aminobenzimidazole-thiazoline ligand: Synthesis, characterization, crystal structures and antimicrobial activity studies
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DOI: 10.1016/j.poly.2021.115390
Abstract: Abstract As part of our ongoing studies related with the coordination chemistry of 2-thiazoline derivatives with transition ions, we report the synthesis of a new class of structurally novel complexes containing in their structures a… read more here.
Keywords: aminobenzimidazole thiazoline; antimicrobial activity; crystal structures; ligand ... See more keywords
Ionic cobalt complexes derived from an amine-bis(benzotriazole phenolate) ligand as bifunctional catalysts for copolymerization of epoxides and anhydrides
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DOI: 10.1016/j.polymer.2021.123928
Abstract: Abstract This study reports that a series of structurally well-defined mono- and di-nuclear cobalt complexes containing the amine-bis(benzotriazole phenolate) ligand (amine-BiBTP) have been synthesized and fully characterized. The one-pot reaction of the amine-BiBTP ligand precursor… read more here.
Keywords: cobalt; bis benzotriazole; benzotriazole phenolate; cobalt complexes ... See more keywords
Capability of PN3-type Cobalt Complexes toward Selective (Co-)Polymerization of Myrcene, Butadiene, and Isoprene: Access to Biosourced Polymers
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DOI: 10.1021/acs.iecr.8b05866
Abstract: In this manuscript, cobalt complexes Co1, Co2, and Co3 supported by PN3-type of ligand have been prepared, characterized, and applied in polymerization of myrcene (My), butadiene (Bd), and isoprene (Ip). The type of catalyst, cocatalyst,… read more here.
Keywords: pn3 type; myrcene; cobalt complexes; polymerization myrcene ... See more keywords
In Situ NMR Search for Spin-Crossover in Heteroleptic Cobalt(II) Complexes.
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DOI: 10.1021/acs.inorgchem.0c00716
Abstract: Here we report the first successful attempt to identify spin-crossover compounds in solutions of metal complexes produced by mixing different ligands and an appropriate metal salt by variable-temperature nuclear magnetic resonance (NMR) spectroscopy. Screening the… read more here.
Keywords: search; spin crossover; cobalt complexes; spin ... See more keywords