Publication detail

Levamisole Based Co(II) Single-Ion Magnet

BISWAS, S. HAVLÍČEK, L. NEMEC, I. ŠALITROŠ, I. MANDAL, L. NEUGEBAUER, P. SENTHIL KUMAR, K. RUBEN, M.

Original Title

Levamisole Based Co(II) Single-Ion Magnet

Type

journal article in Web of Science

Language

English

Original Abstract

A new Co(II) complex, [Co(NCS)(2)(L)(2)] (1) has been synthesized based on levamisole (L) as a new ligand. Single-crystal X-ray diffraction analyses confirm that the Co(II) ion is having a distorted tetrahedral coordination geometry in the complex. Notably strong intramolecular S center dot center dot center dot S and S center dot center dot center dot N interactions has been confirmed by employing Quantum Theory of Atoms in Molecules (QTAIM). These intramolecular interactions occur among the sulfur and nitrogen atoms of the levamisole ligands and also the nitrogen atoms of the thiocyanate. Direct current (dc) magnetic analyses reveal presence of zero field splitting (ZFS) and large magnetic anisotropy on Co(II). Detailed ab initio ligand field theory calculations quantitatively predicted the magnitude of ZFS. Prominent field-induced single-ion magnet (SIM) behavior was observed for 1 from dynamic magnetization measurements. Slow magnetic relaxation follows an Orbach mechanism with the effective energy barrier U-eff=29.6 (7) K and relaxation time tau(o)=1.4 (4)x10(-9) s.

Keywords

Single ion magnet; Cobalt(II) ion; Levamisole; Magnetic anisotropy; ab initio calculations

Authors

BISWAS, S.; HAVLÍČEK, L.; NEMEC, I.; ŠALITROŠ, I.; MANDAL, L.; NEUGEBAUER, P.; SENTHIL KUMAR, K.; RUBEN, M.

Released

2. 9. 2024

Publisher

WILEY-V C H VERLAG GMBH

Location

WEINHEIM

ISBN

1861-471X

Periodical

Chemistry - An Asian Journal

Year of study

19

Number

17

State

Federal Republic of Germany

Pages count

7

URL

https://aces.onlinelibrary.wiley.com/doi/10.1002/asia.202400574

BibTex

@article{BUT189872,
  author="Soumava {Biswas} and Lubomír {Havlíček} and Ivan {Nemec} and Ivan {Šalitroš} and Leena {Mandal} and Petr {Neugebauer} and Kuppusamy {Senthil Kumar} and Mario {Ruben}",
  title="Levamisole Based Co(II) Single-Ion Magnet",
  journal="Chemistry - An Asian Journal",
  year="2024",
  volume="19",
  number="17",
  pages="7",
  doi="10.1002/asia.202400574",
  issn="1861-471X",
  url="https://aces.onlinelibrary.wiley.com/doi/10.1002/asia.202400574"
}