Wydział Chemii

- Richa

Akhilesh Kumar

Indresh Verma

Mamta Gautam

Rohan D. Erande

Julia Kłak

Duane Choquesillo-Lazarte

Antonio J. Mota

Amit Rajput

Himanshu Arora

2022

Journal of Molecular Structure

1269

133805/1-133805/11

10.1016/j.molstruc.2022.133805

Naukowa

Angielski

Artykuł

Using deprotonated forms of tetradentate phenol amine ligands 2-((((1-methylbenzimidazol-2-yl)methyl)(pyridin-2-ylmethyl)amino)methyl)phenol (HL¹), dinuclear vanadium(IV,V) complex of composition [(L¹)₂(V^IVO)(µ-O)(V^VO)](ClO₄) (1) was synthesized and characterized by X–ray crystallography, UV–Vis, EPR and magnetic susceptibility measurements. Direct current (DC) variable-temperature magnetic susceptibility measurements on polycrystalline sample of 1 were carried out in the temperature range 1.8–300 K. Electron paramagnetic resonance and magnetic studies for 1 demonstrated the complete localization of the single 3d electron on one of vanadium ion and very weak antiferromagnetic interaction between the paramagnetic vanadium(IV) ions in the crystal lattice. The cyclic voltammogram observed with 1, revealed one oxidation process which is tentatively assigned to V^IVV^V/V₂^V. [(L¹)₂(V^VO)₂(µ-O)](ClO₄)₂ (2^.2.5CH₂Cl₂) has been synthesized chemically from 1 and were thoroughly characterized by X–ray crystallography, UV–Vis, ⁵¹V NMR and IR measurements.

Mixed-valence, Vanadium complexes, X-ray diffraction, Magnetic properties, EPR spectroscopy, Redox properties, DFT calculations

http://dx.doi.org/10.1016/j.molstruc.2022.133805

http://www.elsevier.com