Detail publikace

Low-spin and spin-crossover iron(ii) complexes with pyridyl-benzimidazole ligands: synthesis, and structural, magnetic and solution study

Brachnakova, B. Koziskova, JA. Kozisek, J. Melnikova, E. Gal, M. Herchel, R. Dubaj, T. Salitros, I.

Originální název

Low-spin and spin-crossover iron(ii) complexes with pyridyl-benzimidazole ligands: synthesis, and structural, magnetic and solution study

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Two tridentate ligands (L1 = 2,6-bis(1-(3,5-di-tert-butylbenzyl)-1H-benzimidazol-2-yl)pyridine and L2 = 2,6-bis(1-(4-tert-butylbenzyl)-1H-benzimidazol-2-yl)pyridine) and one didentate ligand (L3 = 1-(4-tert-butylbenzyl)-2-pyridine-2-yl-1H-benzimidazol) were used for the synthesis of eight mononuclear Fe(II) compounds 1-8 containing miscellaneous counterions. Single-crystal X-ray diffraction analysis confirmed the expected molecular structures of all the reported coordination compounds and revealed the octahedral geometry of metal centres in the complex dications of 1-8. Compounds 1-6 prepared from tridentate ligands were low-spin and, therefore, diamagnetic up to 400 K. On the other hand, compounds 7 and 8, in which the Fe(II) centre was coordinated with didentate ligand L3, exhibited temperature and light triggered spin-crossover behaviour. The theoretical calculations supported the experimental magnetic investigation and helped to explain the electronic structures of the reported complexes with respect to the occurrence of thermal and light induced spin state switching. In addition, the solution redox properties of compounds 1-8 were investigated by cyclic voltammetry.

Klíčová slova

BASIS-SETSROOM-TEMPERATURE TRANSITION STATE VALENCE

Autoři

Brachnakova, B.; Koziskova, JA.; Kozisek, J.; Melnikova, E.; Gal, M.; Herchel, R.; Dubaj, T.; Salitros, I.

Vydáno

28. 12. 2020

Nakladatel

ROYAL SOC CHEMISTRY

Místo

CAMBRIDGE

ISSN

1477-9234

Periodikum

Dalton Transactions

Ročník

49

Číslo

48

Stát

Spojené království Velké Británie a Severního Irska

Strany od

17786

Strany do

17795

Strany počet

10

URL

https://pubs.rsc.org/en/content/articlelanding/2020/DT/D0DT03497E

BibTex

@article{BUT176893,
  author="Brachnakova, B. and Koziskova, JA. and Kozisek, J. and Melnikova, E. and Gal, M. and Herchel, R. and Dubaj, T. and Salitros, I.",
  title="Low-spin and spin-crossover iron(ii) complexes with pyridyl-benzimidazole ligands: synthesis, and structural, magnetic and solution study",
  journal="Dalton Transactions",
  year="2020",
  volume="49",
  number="48",
  pages="17786--17795",
  doi="10.1039/d0dt03497e",
  issn="1477-9234",
  url="https://pubs.rsc.org/en/content/articlelanding/2020/DT/D0DT03497E"
}