Isostructural Co(II)₂Co(III)₄Ln(III)₄ (Ln = Y (1), Gd (2) and Dy (3)) coordination clusters formed using the ligand Tris are the first examples of 3d-4f complexes involving this ligand and show weak ferromagnetic coupling between the Co(II) ions and slow relaxation (SMM) behaviour for 3.
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http://dx.doi.org/10.1039/c000008f | DOI Listing |
Front Chem
December 2024
School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, China.
Studies on cerium oxo clusters (CeOCs) are not only significant for understanding the redox and hydrolysis behaviors of Ce(III/IV) ions but also crucial for the rational synthesis of novel clusters and nanoceria with specific Ce(III)/Ce(IV) ratios. Here, two sets of reactions were conducted using cerium nitrate and HO-oxidized cerium nitrate, resulting in the formation of two distinct mixed-valent CeOCs [Ce Ce O(OH)(PhCO)(DMF)] (Ce) and [Ce Ce O(OH)(PhCO)(DMF)] (Ce). These two clusters exhibit different structures and Ce(III)/Ce(IV) ratios, demonstrating the critical role of cerium oxidation states and the occurrence of redox reactions in cluster formation.
View Article and Find Full Text PDFInorg Chem
November 2024
Department of Chemistry, National Institute of Technology Kurukshetra, Kurukshetra, Haryana 136119, India.
J Am Chem Soc
November 2024
Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
Fluoridoargentates(II) represent a fascinating class of silver(II) compounds with structural and magnetic similarities to cuprate superconductors. However, their synthesis is challenging, leaving their properties largely underexplored and hindering the discovery of new phases. This study introduces mechanochemistry as a novel approach for the synthesis of fluoridoargentates(II), avoiding the use of anhydrous HF or elemental fluorine and employing readily available equipment.
View Article and Find Full Text PDFACS Org Inorg Au
October 2024
Institute for Inorganic Chemistry and Crystallography, Faculty of Biology and Chemistry, University of Bremen, Leobener Straße 7, Bremen 28359, Germany.
From a fundamental perspective, studies of novel mixed-valent complexes containing ferrocenyl units are motivated by the prospect of improving and extending electron transfer models and theories. Here, the series of triferrocenylpnictogens FcE was extended to the heavier analogues (E = As, Sb, and Bi), and the influence of the bridging atom was investigated with FcP as a reference. Electrochemical studies elucidate the effect of electrostatic contribution on the large redox splitting (Δ ) exhibited by the compounds and solvent stabilization in the case of FcAs.
View Article and Find Full Text PDFInorg Chem
October 2024
Institute of Inorganic Chemistry (AOC), Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, Karlsruhe 76131, Germany.
The reactivity of a mixed-valent silaiminyl-silylene [LSi-Si(NDipp)L] (L = PhC(NBu), Dipp = 2,6-Pr-CH) toward various substituted internal alkynes was investigated. In contrast to previous reports that primarily yield [Si(μ-C)Si]-modified rings via 1,2-addition of two silylenes in the center of the molecule, our study reveals a novel reaction pathway. The introduction of [R-C≡C-R] (R = Ph or SiMe, R = Ph or C≡CSiMe) gave unconventional insertion into one of the amidinate ligands, followed by migration of the {NBu} group to bridge two Si atoms.
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