Magnetostructural and EPR Studies of Anisotropic Vanadium trans-Dicyanide Molecules

Mohamed R Saber; Komalavalli Thirunavukkuarasu; Samuel M Greer; Stephen Hill; Kim R Dunbar

doi:10.1021/acs.inorgchem.0c01595

Magnetostructural and EPR Studies of Anisotropic Vanadium trans-Dicyanide Molecules

Inorg Chem. 2020 Sep 21;59(18):13262-13269. doi: 10.1021/acs.inorgchem.0c01595. Epub 2020 Sep 1.

Authors

Mohamed R Saber^{1

2}, Komalavalli Thirunavukkuarasu^{3

4}, Samuel M Greer^{4

5}, Stephen Hill^{4

6}, Kim R Dunbar¹

Affiliations

¹ Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States.
² Chemistry Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt.
³ Department of Physics, Florida A&M University, Tallahassee, Florida 32307, United States.
⁴ National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States.
⁵ Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States.
⁶ Department of Physics, Florida State University, Tallahassee, Florida 32306, United States.

PMID: 32869626
DOI: 10.1021/acs.inorgchem.0c01595

Abstract

A series of trans-dicyanide vanadium(III) compounds based on acetylacetonate, (PPN)[V^III(acac)₂(CN)₂]·(PPN)Cl·2MeCN (1), and salen ligands, (Et₄N)[V^III(salen)(CN)₂] (2a), (PPN)[V^III(MeOsalen)(CN)₂]·DMF·2MeCN (3), and (PPN)[V^III(salphen)(CN)₂]·DMF (4) [salen = N,N'-ethylenebis(salicyl-imine), MeOsalen = N,N'-ethylenebis(methoxysalicylimine), salphen = N,N'-phenylenebis(salicyl-imine), and PPN = bis(triphenylphosphine)iminium], were prepared and structurally characterized. High-field EPR studies reveal that the complexes exhibit moderate magnetic anisotropy with positive D values of +5.70, +3.80, +4.05, and +3.99 cm^-1 for 1-4, respectively.