Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical

Toshiaki Tsukuda; Takayoshi Suzuki; Sumio Kaizaki

doi:10.1016/j.ica.2004.11.001

Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical

Toshiaki Tsukuda, Takayoshi Suzuki, Sumio Kaizaki

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Synthesis, characterization and magnetic properties of new lanthanide-radical complexes, [Ln^III(hfac)₃(IM2imH)] (Ln = Gd, Tb; IM2imH = 2-(2-pyridyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazolyl-1- oxy), are described. The molecular structure of the [Tb(hfac) ₃(IM2imH)] has been determined by the X-ray diffraction. The magnetic susceptibility data for [Gd(hfac)₃(IM2imH)] show that the Gd-IM2imH magnetic interaction is antiferromagnetic with an exchange coupling constant J = -2.59 cm^-1 in contrast to the ferromagnetic interaction in most of Gd(III) complexes containing paramagnetic center, which will be examined in connection with planarity of the IM2imH chelate.

Original language	English
Pages (from-to)	1253-1257
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	358
Issue number	4
DOIs	https://doi.org/10.1016/j.ica.2004.11.001
Publication status	Published - Mar 1 2005
Externally published	Yes

Keywords

Imino nitroxide radical ligand
Lanthanide complexes
Magnetic interaction

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.ica.2004.11.001

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title = "Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical",

abstract = "Synthesis, characterization and magnetic properties of new lanthanide-radical complexes, [LnIII(hfac)3(IM2imH)] (Ln = Gd, Tb; IM2imH = 2-(2-pyridyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazolyl-1- oxy), are described. The molecular structure of the [Tb(hfac) 3(IM2imH)] has been determined by the X-ray diffraction. The magnetic susceptibility data for [Gd(hfac)3(IM2imH)] show that the Gd-IM2imH magnetic interaction is antiferromagnetic with an exchange coupling constant J = -2.59 cm-1 in contrast to the ferromagnetic interaction in most of Gd(III) complexes containing paramagnetic center, which will be examined in connection with planarity of the IM2imH chelate.",

keywords = "Imino nitroxide radical ligand, Lanthanide complexes, Magnetic interaction",

author = "Toshiaki Tsukuda and Takayoshi Suzuki and Sumio Kaizaki",

year = "2005",

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doi = "10.1016/j.ica.2004.11.001",

language = "English",

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journal = "Inorganica Chimica Acta",

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T1 - Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical

AU - Tsukuda, Toshiaki

AU - Suzuki, Takayoshi

AU - Kaizaki, Sumio

PY - 2005/3/1

Y1 - 2005/3/1

N2 - Synthesis, characterization and magnetic properties of new lanthanide-radical complexes, [LnIII(hfac)3(IM2imH)] (Ln = Gd, Tb; IM2imH = 2-(2-pyridyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazolyl-1- oxy), are described. The molecular structure of the [Tb(hfac) 3(IM2imH)] has been determined by the X-ray diffraction. The magnetic susceptibility data for [Gd(hfac)3(IM2imH)] show that the Gd-IM2imH magnetic interaction is antiferromagnetic with an exchange coupling constant J = -2.59 cm-1 in contrast to the ferromagnetic interaction in most of Gd(III) complexes containing paramagnetic center, which will be examined in connection with planarity of the IM2imH chelate.

AB - Synthesis, characterization and magnetic properties of new lanthanide-radical complexes, [LnIII(hfac)3(IM2imH)] (Ln = Gd, Tb; IM2imH = 2-(2-pyridyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazolyl-1- oxy), are described. The molecular structure of the [Tb(hfac) 3(IM2imH)] has been determined by the X-ray diffraction. The magnetic susceptibility data for [Gd(hfac)3(IM2imH)] show that the Gd-IM2imH magnetic interaction is antiferromagnetic with an exchange coupling constant J = -2.59 cm-1 in contrast to the ferromagnetic interaction in most of Gd(III) complexes containing paramagnetic center, which will be examined in connection with planarity of the IM2imH chelate.

KW - Imino nitroxide radical ligand

KW - Lanthanide complexes

KW - Magnetic interaction

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JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 4

ER -

Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical

Abstract

Keywords

ASJC Scopus subject areas

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