Generation of a Hetero Spin Complex from Iron(II) Iodide with Redox Active Acenaphthene-1,2-Diimine

• Published in: Molecules (Basel, Switzerland) Vol. 26; no. 10; p. 2998
• Main Authors: Yambulatov, Dmitriy S., Nikolaevskii, Stanislav A., Kiskin, Mikhail A., Kholin, Kirill V., Khrizanforov, Mikhail N., Budnikova, Yulia G., Babeshkin, Konstantin A., Efimov, Nikolay N., Goloveshkin, Alexander S., Imshennik, Vladimir K., Maksimov, Yurii V., Kadilenko, Evgeny M., Gritsan, Nina P., Eremenko, Igor L.
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 18.05.2021; MDPI
• Subjects: BIAN; cyclic voltammetry; Information storage; iron(II) complex; Ligands; magnetic measurements; Molecular structure; Oxidation; α-diimine
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules26102998

The reaction of the redox active 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-BIAN) and iron(II) iodide in acetonitrile led to a new complex [(dpp-BIAN)FeIII2] (1). Molecular structure of 1 was determined by the single crystal X-ray diffraction analysis. The spin state of the iron cation in complex 1 at room temperature and the magnetic behavior of 1 in the temperature range of 2–300 K were studied using Mossbauer spectroscopy and magnetic susceptibility measurements, respectively. The neutral character of dpp-BIAN in 1 was confirmed by IR and UV spectroscopy. The electrochemistry of 1 was studied in solution and solid state using cyclic voltammetry. The generation of the radical anion form of the dpp-BIAN ligand upon reduction of 1 in a CH2Cl2 solution was monitored by EPR spectroscopy.