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In this paper, data from a DFT-based computational study on the reactivity of [Cu(2,2'--bpy)]PF6 ( indicating substitution by methyl groups at the 6 and/or 6' position and ranging from 0 to 100% through 50%) homoleptic complexes based toward tButOOH were presented. Computational results, supported by cyclic voltammetry analysis, prove the feasibility of finely tuning the chemical properties of the complexes and their reactivity by means of insertion of methyl moieties in selected positions within the bipyridine scaffold.
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http://dx.doi.org/10.1021/acsomega.4c00598 | DOI Listing |
Chem Commun (Camb)
September 2025
Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, CH-3012 Bern, Switzerland.
Iron complexes bearing chiral salicyloxazoline (Salox) ligands catalyze the enantioselective intramolecular C-H bond amination of alkyl azides, reaching 58-76% ee for benzylic C-H bonds. Further, for the first time aliphatic C-H bond amination is demonstrated (∼40% ee). This class of catalysts even activates primary aliphatic C-H bonds, albeit with moderate ee.
View Article and Find Full Text PDFInorg Chem
September 2025
Department of Chemistry and Center for Metalloenzyme Studies, The University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States.
[NiFe]-hydrogenase enzymes process H at a nonplanar tetracysteinato-Ni site, the sole participator in proton binding/redox chemistry during turnover. With the objective of assessing whether a simple tetrahedral/tetrathiolato-Ni core could promote H evolution reaction (HER), we synthesized (EtN)[Ni(S--CF-Ph)] () employing -trifluoromethylbenzenethiolate (S--CF-Ph) as a Ni-site analog of [NiFe]-hydrogenase. Spectroscopic measurements and X-ray crystallography confirm the distorted tetrahedral geometry of .
View Article and Find Full Text PDFJ Inorg Biochem
September 2025
Área Química Inorgánica, Facultad de Química, Universidad de la República, Montevideo, Uruguay. Electronic address:
Chagas disease, caused by Trypanosoma cruzi, remains a major public health concern with limited therapeutic options and significant toxicity associated with current treatments. In this work, eight novel heteroleptic complexes of the type [M(L)(phen)], where M = Cu(II) or Zn(II), L = coumarin-thiosemicarbazone hybrid ligands, and phen = 1,10-phenanthroline, were synthesized and fully characterized in the solid state and in solution. For comparison, some homoleptic [Cu(HL)₂], [Zn(HL)₂], and [CuCl(HL)] complexes were also prepared.
View Article and Find Full Text PDFDalton Trans
September 2025
Department of Chemical Science, Life Science and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
The response of two differently entangled, Zn-containing, pillared metal-organic frameworks (MOFs) toward quinolines and pyridines was studied. The corresponding products have been defined by single crystal X-ray diffraction analysis, when possible through single-crystal-to-single-crystal transformations. These two MOFs have similar chemical compositions, each consisting of a dicarboxylate linker (4,4'-biphenyldicarboxylate or 2,6-naphthalenedicarboxylate) and the same bis-amide-bis-pyridine pillar.
View Article and Find Full Text PDFJACS Au
August 2025
Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Rebenring 31, 38106 Braunschweig, Germany.
We report the design and synthesis of two novel phenanthroline-based ligands, a catechol-functionalized derivative (: 4,7-(4-catechol)-2,9-dimethyl-1,10-phenanthroline) ligand and its methoxy analogue (). These ligands were used to prepare four Cu-(I) complexes: two homoleptic bis-diimine Cu-(I) complexes ( and ) and two xantphos-based heteroleptic diimine-diphosphine derivatives ( and ). Their photophysical and electrochemical properties were characterized by steady-state and time-resolved spectroscopy, cyclic voltammetry, and density functional theory (DFT) calculations.
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