Molybdenum Complexes Derived from 2-Hydroxy-5-nitrobenzaldehyde and Benzhydrazide as Potential Oxidation Catalysts and Semiconductors

Pisk, Jana; Šušković, Mia; Topić, Edi; Agustin, Dominique; Judaš, Nenad; Pavić, Luka (2024) Molybdenum Complexes Derived from 2-Hydroxy-5-nitrobenzaldehyde and Benzhydrazide as Potential Oxidation Catalysts and Semiconductors. International Journal of Molecular Sciences, 25 (9). ISSN 1422-0067

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Abstract

This study aimed to synthesize molybdenum complexes coordinated with an aroyl hydrazone-type ligand (H2L), which was generated through the condensation of 2-hydroxy-5-nitrobenzaldehyde with benzhydrazide. The synthesis yielded two types of mononuclear complexes, specifically [MoO2(L)(MeOH)] and [MoO2(L)(H2O)], as well as a bipyridine-bridged dinuclear complex, [(MoO2(L))2(4,4’-bpy)]. Those entities were thoroughly characterized using a suite of analytical techniques, including attenuated total reflectance infrared spectroscopy (IR-ATR), elemental analysis (EA), thermogravimetric analysis (TGA), and single-crystal X-ray diffraction (SCXRD). Additionally, solid-state impedance spectroscopy (SS-IS) was employed to investigate the electrical properties of these complexes. The mononuclear complexes were tested as catalysts in the epoxidation of cyclooctene and the oxidation of linalool. Among these, the water-coordinated mononuclear complex, [MoO2(L)(H2O)], demonstrated superior electrical and catalytic properties. A novel contribution of this research lies in establishing a correlation between the electrical properties, structural features, and the catalytic efficiency of the complexes, marking this work as one of the pioneering studies in this area for molybdenum coordination complexes, to the best of our knowledge.

Item Type:	Article
Uncontrolled Keywords:	molybdenum; aroyl-hydrazones; electrical properties; oxidation; impendence spectroscopy; cyclooctene; linalool
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Materials Chemistry
Projects:	Project title Project leader Project code Project type Diligent search for chemical bio-sources:Solvent-free homogenous and heterogenous oxidation processes catalyzed by polyoxometalates-PomFree Jana Pisk 66 EK Oksidacija politerpena pomoću mehanokemijski pripravljenih katalizatora - bez dodatka organskih otapala Jana Pisk UNSPECIFIED Znanstveno-istraživački projekt
Depositing User:	Lorena Palameta
Date Deposited:	28 Aug 2024 12:51
URI:	http://fulir.irb.hr/id/eprint/9031
DOI:	10.3390/ijms25094859

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