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    Different topology of mixed valence CoIICoIII complexes with SCN anions and hydrazone–pyridine-based ligands
    (Springer, 2024) Mahmoudi, Ghodrat; Novikov, Alexander S.; Balić, Tomislav; Zangrando, Ennio; White, Jonathan M.; Eftekhari-Sis, Bagher
    Two novel mixed valence CoIICoIII complexes [Co4II(SCN)12(EtOH)2Co4III(L1)8] (1) and [CoII(SCN)2Co2III(L2)4]n (2) (HL1 = N’-(1-(pyridin-2-yl)ethylidene)nicotinohydrazide and HL2 = N’-(phenyl(pyridin-2-yl)methylene)isonicotinohydrazide) have been synthesized and structurally characterized by the single crystal X-ray crystallography. In both cases, the deprotonated ligands HL1 and HL2 behave as chelating species toward CoIII, further connecting CoII fragments through the nicotine pyridine donors. A different topology is observed in the solid state of these complexes, complex 1 being an octanuclear cyclic species, while 2 is a 1D coordination polymer. The DFT calculations followed by the topological analysis of the electron density distribution have shown the existence of interesting non-covalent S···π-system interactions in 1. The CSD database search for similar supramolecular motif involving NCS anion has shown that the number and strength of S···π interactions depend both on acidity of metal cation and number aromatic systems in the molecular structure of ligand. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
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    In-situ synthesis of SnO/CuSnO 3 nanostructures to catalyze azo dye degradation, CO 2 reduction, and amines direct alkylation reactions under visible light
    (Elsevier, 2024) Padervand, Mohsen; Bargahi, Alireza; Eftekhari-Sis, Bagher; Saadi, Mina; Ghasemi, Shahnaz; Dawi, Elmuez A.; Labidi, Abdelkader; Mahmoudi, Ghodrat; Gargari, Masoumeh Servati
    The extensive use of photocatalysis to address environmental concerns, energy production, and organic transformations has attracted attention in recent decades. The SnO/CSO photocatalytic materials were fabricated through a single-step hydrothermal method and comprehensively characterized using a muti-technique approach to demonstrate the physicochemical, morphological, and electronic features. According to the photocatalytic experiments, the SnO/CSO could remove >96% of acid blue 92 (AB92) azo dye under optimum conditions , with rate constant 2.37 x 10(-2) min(-1). Furthermore, the photocatalyst significantly outperformed commercial TiO2 (P25), in reducing CO2 to CO and CH4 with a production rate of 10.8 and 1.18 mu mol.g(-1).h(-1), respectively, under visible light irradiation. The successful direct alkylation of amines to valuable organic compounds within 10 min of the reaction time with a conversion selectivity of >90% was another capability of the materials, making it a good candidate for pharmaceutical synthesis purposes.