Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions

Asami Tsukiashi, Manabu Nakaya, Fumiya Kobayashi, Ryo Ohtani, Masaaki Nakamura, Jack M. Harrowfield, Yang Kim, Shinya Hayami

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Iron(III) spin-crossover (SCO) complexes [Fe(qsal)2]BS·MeOH·H2O (1), [Fe(qsal)2](NS)·MeOH (2), [Fe(qnal)2](NS) (3), and [Fe(qnal)2]PS·MeOH·CH2Cl2 (4) (Hqsal, N-(8-quinolinyl)salicylaldimine; Hqnal, N-(8-quinolinyl)-2-hydroxy-1-naphthaldimine; BS, benzenesulfonate; NS, 1-naphthalenesulfonate; PS, 1-pyrenesulfonate) have been synthesized and characterized by X-ray structure determinations and temperature-dependent magnetic susceptibility measurements. The aromatic counteranions BS, NS, and PS can be used for the tuning of intermolecular coupling through a variety of weak interactions. All of the complexes show temperature-dependent SCO behavior. but the light-induced excited spin-state trapping (LIESST) effect was observed only for 1, 3, and 4 when the samples were illuminated (λ 808 nm) for 1 h at 5 K. In particular, 59% of the LS form of 1 was converted to the metastable HS state by illumination, equal to the highest degree of conversion yet known for LIESST in [Fe(qsal)2]+ derivatives. The lack of a LIESST effect for 2 may be due to the relatively limited degree of interaction between the cations and anions in the lattice, reflected in a much longer minimum Fe···Fe separation in this complex in comparison to the others.

Original languageEnglish
Pages (from-to)2834-2842
Number of pages9
JournalInorganic chemistry
Volume57
Issue number5
DOIs
Publication statusPublished - Mar 5 2018

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crossovers
Iron
Tuning
montirelin
tuning
iron
Naphthalenesulfonates
trapping
interactions
Magnetic susceptibility
Anions
Cations
Lighting
Derivatives
X rays
Temperature
illumination
anions
magnetic permeability
cations

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Tsukiashi, A., Nakaya, M., Kobayashi, F., Ohtani, R., Nakamura, M., Harrowfield, J. M., ... Hayami, S. (2018). Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions. Inorganic chemistry, 57(5), 2834-2842. https://doi.org/10.1021/acs.inorgchem.7b03126

Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions. / Tsukiashi, Asami; Nakaya, Manabu; Kobayashi, Fumiya; Ohtani, Ryo; Nakamura, Masaaki; Harrowfield, Jack M.; Kim, Yang; Hayami, Shinya.

In: Inorganic chemistry, Vol. 57, No. 5, 05.03.2018, p. 2834-2842.

Research output: Contribution to journalArticle

Tsukiashi, A, Nakaya, M, Kobayashi, F, Ohtani, R, Nakamura, M, Harrowfield, JM, Kim, Y & Hayami, S 2018, 'Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions', Inorganic chemistry, vol. 57, no. 5, pp. 2834-2842. https://doi.org/10.1021/acs.inorgchem.7b03126
Tsukiashi, Asami ; Nakaya, Manabu ; Kobayashi, Fumiya ; Ohtani, Ryo ; Nakamura, Masaaki ; Harrowfield, Jack M. ; Kim, Yang ; Hayami, Shinya. / Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions. In: Inorganic chemistry. 2018 ; Vol. 57, No. 5. pp. 2834-2842.
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