Chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH (HLR = 2-methylimidazol-4-yl-methylideneamino-R-(+)-1- methylphenyl)

Tomotaka Hashibe, Takeshi Fujinami, Daisuke Furusho, Naohide Matsumoto, Yukinari Sunatsuki

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH was synthesized and its crystal structures in both the high-spin (HS) and low-spin (LS) states were determined, where HLR denotes 2-methylimidazol-4-yl-methylideneamino-R-(+)-1-methylphenyl. The complex assumes octahedral coordination geometry of N6 donor atoms by three bidentate ligands HLR. The complex exists as the facial-Λ- isomer of fac-Λ-[FeII(HLR)3] 2+ of the possible geometrical fac- and mer-isomers and the Δ- and Λ-enantiomorphs. The X-ray structural analyses revealed that the R-form of the ligand (HLR) induces the fac-Λ-isomer of fac-Λ-[FeII(HLR)3]2+ and the S-form of the ligand (HLS) induces the fac-Δ-isomer of fac-Δ-[Fe(HLS)3]2+. The complex fac-Λ-[FeII(HLR)3](ClO4) 2·EtOH shows a complete steep spin crossover between the HS and the LS states at T1/2 = 195 K.

Original languageEnglish
Pages (from-to)338-342
Number of pages5
JournalInorganica Chimica Acta
Volume375
Issue number1
DOIs
Publication statusPublished - Sep 1 2011

Fingerprint

Isomers
crossovers
Iron
iron
Ligands
isomers
ligands
Crystal structure
enantiomers
X rays
Atoms
Geometry
perchlorate
2-methylimidazole
crystal structure
geometry
atoms
x rays

Keywords

  • Bidentate ligand
  • Chiral ligand
  • Hydrogen bonds
  • Iron(II) complex
  • Spin crossover

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH (HLR = 2-methylimidazol-4-yl-methylideneamino-R-(+)-1- methylphenyl). / Hashibe, Tomotaka; Fujinami, Takeshi; Furusho, Daisuke; Matsumoto, Naohide; Sunatsuki, Yukinari.

In: Inorganica Chimica Acta, Vol. 375, No. 1, 01.09.2011, p. 338-342.

Research output: Contribution to journalArticle

@article{3617a973f43544a9afbabfff14726b17,
title = "Chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH (HLR = 2-methylimidazol-4-yl-methylideneamino-R-(+)-1- methylphenyl)",
abstract = "A chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH was synthesized and its crystal structures in both the high-spin (HS) and low-spin (LS) states were determined, where HLR denotes 2-methylimidazol-4-yl-methylideneamino-R-(+)-1-methylphenyl. The complex assumes octahedral coordination geometry of N6 donor atoms by three bidentate ligands HLR. The complex exists as the facial-Λ- isomer of fac-Λ-[FeII(HLR)3] 2+ of the possible geometrical fac- and mer-isomers and the Δ- and Λ-enantiomorphs. The X-ray structural analyses revealed that the R-form of the ligand (HLR) induces the fac-Λ-isomer of fac-Λ-[FeII(HLR)3]2+ and the S-form of the ligand (HLS) induces the fac-Δ-isomer of fac-Δ-[Fe(HLS)3]2+. The complex fac-Λ-[FeII(HLR)3](ClO4) 2·EtOH shows a complete steep spin crossover between the HS and the LS states at T1/2 = 195 K.",
keywords = "Bidentate ligand, Chiral ligand, Hydrogen bonds, Iron(II) complex, Spin crossover",
author = "Tomotaka Hashibe and Takeshi Fujinami and Daisuke Furusho and Naohide Matsumoto and Yukinari Sunatsuki",
year = "2011",
month = "9",
day = "1",
doi = "10.1016/j.ica.2011.05.032",
language = "English",
volume = "375",
pages = "338--342",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH (HLR = 2-methylimidazol-4-yl-methylideneamino-R-(+)-1- methylphenyl)

AU - Hashibe, Tomotaka

AU - Fujinami, Takeshi

AU - Furusho, Daisuke

AU - Matsumoto, Naohide

AU - Sunatsuki, Yukinari

PY - 2011/9/1

Y1 - 2011/9/1

N2 - A chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH was synthesized and its crystal structures in both the high-spin (HS) and low-spin (LS) states were determined, where HLR denotes 2-methylimidazol-4-yl-methylideneamino-R-(+)-1-methylphenyl. The complex assumes octahedral coordination geometry of N6 donor atoms by three bidentate ligands HLR. The complex exists as the facial-Λ- isomer of fac-Λ-[FeII(HLR)3] 2+ of the possible geometrical fac- and mer-isomers and the Δ- and Λ-enantiomorphs. The X-ray structural analyses revealed that the R-form of the ligand (HLR) induces the fac-Λ-isomer of fac-Λ-[FeII(HLR)3]2+ and the S-form of the ligand (HLS) induces the fac-Δ-isomer of fac-Δ-[Fe(HLS)3]2+. The complex fac-Λ-[FeII(HLR)3](ClO4) 2·EtOH shows a complete steep spin crossover between the HS and the LS states at T1/2 = 195 K.

AB - A chiral spin crossover iron(II) complex, fac-Λ-[Fe II(HLR)3](ClO4)2· EtOH was synthesized and its crystal structures in both the high-spin (HS) and low-spin (LS) states were determined, where HLR denotes 2-methylimidazol-4-yl-methylideneamino-R-(+)-1-methylphenyl. The complex assumes octahedral coordination geometry of N6 donor atoms by three bidentate ligands HLR. The complex exists as the facial-Λ- isomer of fac-Λ-[FeII(HLR)3] 2+ of the possible geometrical fac- and mer-isomers and the Δ- and Λ-enantiomorphs. The X-ray structural analyses revealed that the R-form of the ligand (HLR) induces the fac-Λ-isomer of fac-Λ-[FeII(HLR)3]2+ and the S-form of the ligand (HLS) induces the fac-Δ-isomer of fac-Δ-[Fe(HLS)3]2+. The complex fac-Λ-[FeII(HLR)3](ClO4) 2·EtOH shows a complete steep spin crossover between the HS and the LS states at T1/2 = 195 K.

KW - Bidentate ligand

KW - Chiral ligand

KW - Hydrogen bonds

KW - Iron(II) complex

KW - Spin crossover

UR - http://www.scopus.com/inward/record.url?scp=80051581466&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051581466&partnerID=8YFLogxK

U2 - 10.1016/j.ica.2011.05.032

DO - 10.1016/j.ica.2011.05.032

M3 - Article

AN - SCOPUS:80051581466

VL - 375

SP - 338

EP - 342

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 1

ER -