Publication detail

Above room temperature spin crossover in mononuclear iron(II) complexes featuring pyridyl-benzimidazole bidentate ligands adorned with aliphatic chains

ŠAGÁTOVÁ, A. KOTRLE, K. BRACHŇAKOVÁ, B. HAVLÍČEK, L. NEMEC, I. HERCHEL, R. HOFBAUEROVA, M.HALAHOVETS, Y. ŠIFFALOVIČ, P. ČIŽMÁR, E. FELLNER, O.F. ŠALITROŠ, I.

Original Title

Above room temperature spin crossover in mononuclear iron(II) complexes featuring pyridyl-benzimidazole bidentate ligands adorned with aliphatic chains

Type

journal article in Web of Science

Language

English

Original Abstract

Two bidentate ligands (L1 = 1-pentyl-2-(pyridin-2-yl)-1H-benzimidazole and L2 = 1-heptyl-2-(pyridin-2-yl)-1H-benzimidazole) were employed for the synthesis of five mononuclear Fe(ii) coordination compounds 1-5 containing perchlorate, tetrafluoroborate and triflate counterions. Single-crystal X-ray diffraction analysis confirmed the expected molecular structures of all the reported compounds, revealing a moderately distorted octahedral geometry of {FeN6} coordination chromophores. All five compounds exhibit thermal spin crossover with T1/2 temperatures allocated above 400 K. 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 spin state switching. In addition, compound 4 was employed for the preparation of Langmuir-Blodgett films and fabrication of molecular films using the method of spontaneous evaporation of the subphase. While the formation of Langmuir-Blodgett films was unsuccessful due to the instability of the compound at the water/air interface, the latter technique allowed the formation of molecular films of 4 with well-defined thickness and homogeneity.

Keywords

MOLECULAR MATERIALS; TRANSITION; POLYMORPHISM; FILMS

Authors

ŠAGÁTOVÁ, A.; KOTRLE, K.; BRACHŇAKOVÁ, B.; HAVLÍČEK, L.; NEMEC, I.; HERCHEL, R.; HOFBAUEROVA, M.;HALAHOVETS, Y.; ŠIFFALOVIČ, P.; ČIŽMÁR, E.; FELLNER, O.F.; ŠALITROŠ, I.

Released

20. 8. 2024

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

1477-9234

Periodical

Dalton Transactions

Year of study

53

Number

33

State

United Kingdom of Great Britain and Northern Ireland

Pages from

14037

Pages to

14045

Pages count

9

URL

https://pubs.rsc.org/en/content/articlelanding/2024/dt/d4dt01338g

BibTex

@article{BUT189889,
  author="ŠAGÁTOVÁ, A. and KOTRLE, K. and BRACHŇAKOVÁ, B. and HAVLÍČEK, L. and NEMEC, I. and HERCHEL, R. and HOFBAUEROVA, M. and HALAHOVETS, Y. and ŠIFFALOVIČ, P. and ČIŽMÁR, E. and FELLNER, O.F. and ŠALITROŠ, I.",
  title="Above room temperature spin crossover in mononuclear iron(II) complexes featuring pyridyl-benzimidazole bidentate ligands adorned with aliphatic chains",
  journal="Dalton Transactions",
  year="2024",
  volume="53",
  number="33",
  pages="14037--14045",
  doi="10.1039/d4dt01338g",
  issn="1477-9234",
  url="https://pubs.rsc.org/en/content/articlelanding/2024/dt/d4dt01338g"
}