Spin states of mono- and dinuclear iron(II) complexes with bis(imidazolylimine) ligands

Kunihiro Fujita; Ryohei Kawamoto; Ryohei Tsubouchi; Yukinari Sunatsuki; Masaaki Kojima; Seiichiro Iijima; Naohide Matsumoto

doi:10.1246/cl.2007.1284

Spin states of mono- and dinuclear iron(II) complexes with bis(imidazolylimine) ligands

Kunihiro Fujita, Ryohei Kawamoto, Ryohei Tsubouchi, Yukinari Sunatsuki, Masaaki Kojima, Seiichiro Iijima, Naohide Matsumoto

Advanced Science Research Center

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

Bis(imidazolylimine) ligands, H ₂L ^H and H ₂L ^Me, were prepared from hydrazine and 4-formylimidazole or 2-methyl4-formylimidazole (1:2), respectively. Mononuclear iron(II) complexes, [Fe(H ₂L ^H) ₂](ClO ₄) ₂·MeOH and [Fe(H ₂L ^Me) ₂]-(ClO ₄) ₂·2H ₂O, were in the LS and HS states, respectively, in the temperature range 5-300 K. A triple-helicate [Fe ₂-(H ₂L ^H) ₃] (ClO ₄) ₄, showed an abrupt [LS-HS] to [HS-HS] spin transition at 240K, while [Fe ₂(H ₂L ^Me) ₃](ClO ₄) ₄ remained in the LS state in the temperature range 5-300 K.

Original language	English
Pages (from-to)	1284-1285
Number of pages	2
Journal	Chemistry Letters
Volume	36
Issue number	10
DOIs	https://doi.org/10.1246/cl.2007.1284
Publication status	Published - Oct 5 2007

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1246/cl.2007.1284

Fingerprint Dive into the research topics of 'Spin states of mono- and dinuclear iron(II) complexes with bis(imidazolylimine) ligands'. Together they form a unique fingerprint.

Cite this

@article{8605ea82cb834e17a40ae37b45ff29a5,

title = "Spin states of mono- and dinuclear iron(II) complexes with bis(imidazolylimine) ligands",

abstract = "Bis(imidazolylimine) ligands, H 2L H and H 2L Me, were prepared from hydrazine and 4-formylimidazole or 2-methyl4-formylimidazole (1:2), respectively. Mononuclear iron(II) complexes, [Fe(H 2L H) 2](ClO 4) 2·MeOH and [Fe(H 2L Me) 2]-(ClO 4) 2·2H 2O, were in the LS and HS states, respectively, in the temperature range 5-300 K. A triple-helicate [Fe 2-(H 2L H) 3] (ClO 4) 4, showed an abrupt [LS-HS] to [HS-HS] spin transition at 240K, while [Fe 2(H 2L Me) 3](ClO 4) 4 remained in the LS state in the temperature range 5-300 K.",

author = "Kunihiro Fujita and Ryohei Kawamoto and Ryohei Tsubouchi and Yukinari Sunatsuki and Masaaki Kojima and Seiichiro Iijima and Naohide Matsumoto",

year = "2007",

month = oct,

day = "5",

doi = "10.1246/cl.2007.1284",

language = "English",

volume = "36",

pages = "1284--1285",

journal = "Chemistry Letters",

issn = "0366-7022",

publisher = "Chemical Society of Japan",

number = "10",

}

TY - JOUR

T1 - Spin states of mono- and dinuclear iron(II) complexes with bis(imidazolylimine) ligands

AU - Fujita, Kunihiro

AU - Kawamoto, Ryohei

AU - Tsubouchi, Ryohei

AU - Sunatsuki, Yukinari

AU - Kojima, Masaaki

AU - Iijima, Seiichiro

AU - Matsumoto, Naohide

PY - 2007/10/5

Y1 - 2007/10/5

N2 - Bis(imidazolylimine) ligands, H 2L H and H 2L Me, were prepared from hydrazine and 4-formylimidazole or 2-methyl4-formylimidazole (1:2), respectively. Mononuclear iron(II) complexes, [Fe(H 2L H) 2](ClO 4) 2·MeOH and [Fe(H 2L Me) 2]-(ClO 4) 2·2H 2O, were in the LS and HS states, respectively, in the temperature range 5-300 K. A triple-helicate [Fe 2-(H 2L H) 3] (ClO 4) 4, showed an abrupt [LS-HS] to [HS-HS] spin transition at 240K, while [Fe 2(H 2L Me) 3](ClO 4) 4 remained in the LS state in the temperature range 5-300 K.

AB - Bis(imidazolylimine) ligands, H 2L H and H 2L Me, were prepared from hydrazine and 4-formylimidazole or 2-methyl4-formylimidazole (1:2), respectively. Mononuclear iron(II) complexes, [Fe(H 2L H) 2](ClO 4) 2·MeOH and [Fe(H 2L Me) 2]-(ClO 4) 2·2H 2O, were in the LS and HS states, respectively, in the temperature range 5-300 K. A triple-helicate [Fe 2-(H 2L H) 3] (ClO 4) 4, showed an abrupt [LS-HS] to [HS-HS] spin transition at 240K, while [Fe 2(H 2L Me) 3](ClO 4) 4 remained in the LS state in the temperature range 5-300 K.

UR - http://www.scopus.com/inward/record.url?scp=36048996321&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36048996321&partnerID=8YFLogxK

U2 - 10.1246/cl.2007.1284

DO - 10.1246/cl.2007.1284

M3 - Article

AN - SCOPUS:36048996321

VL - 36

SP - 1284

EP - 1285

JO - Chemistry Letters

JF - Chemistry Letters

SN - 0366-7022

IS - 10

ER -