Structural, magnetic and theoretical analyses of anionic and cationic phthalocyaninato-terbium(iii ) double-decker complexes: magnetic relaxation via higher ligand-field sublevels enhanced by oxidation
| Autor: | Yoji Horii, Marko Damjanović, Masahiro Yamashita, Keiichi Katoh |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Ligand field theory
Materials science 010405 organic chemistry Ab initio Cationic polymerization chemistry.chemical_element Terbium 010402 general chemistry Magnetic hysteresis 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystallography chemistry Excited state Magnet Spin (physics) |
| Zdroj: | Dalton Transactions. 50:9719-9724 |
| ISSN: | 1477-9234 1477-9226 |
| Popis: | Crystal structural and magnetic analyses were performed for the anionic (1−) and cationic (1+) forms of phthalocyaninato-Tb3+ double-decker single-molecule magnets (SMMs). Both charged species showed slow magnetic relaxations and magnetic hysteresis characteristics for SMMs. 1+ showed longer magnetic relaxation times (τ) and higher activation energy for spin reversal (ΔE) than 1− did. Ligand field (LF) splitting calculated using ab initio methods revealed that the experimental ΔE values in 1− and 1+ were considerably larger than the first excited LF levels but rather close to the higher excited ones, indicating the magnetic relaxation via higher excited states. |
| Databáze: | OpenAIRE |
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