Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring

Hideaki Nagashima; Naoki Yoshioka; Hidenari Inoue

doi:10.1016/S0277-5387(01)00587-3

Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring

Hideaki Nagashima, Naoki Yoshioka, Hidenari Inoue

Department of Applied Chemistry

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

17 Citations (Scopus)

Abstract

2-(Purin-8-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxide (Pu-NN) was designed and synthesized. Two crystalline phases (α- and β-phases) exhibiting different IR spectral patterns at the v_NH region were obtained depending on the crystallizing condition. The temperature dependences of the magnetic susceptibility of these two phases followed Curie-Weiss law with θ = - 5.7 K (α-phase) and θ = - 0.3 K (β-phase) implying intermolecular antiferromagnetic interaction, which were quite different from that of parent benzimidazole derivative, 2-(benzimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazolyl-1-oxyl-3-oxide that formed a 1-D ferromagnetic chain induced by an intermolecular hydrogen bonding.

Original language	English
Pages (from-to)	1151-1155
Number of pages	5
Journal	Polyhedron
Volume	20
Issue number	11-14
DOIs	https://doi.org/10.1016/S0277-5387(01)00587-3
Publication status	Published - 2001 May 30

Keywords

Hydrogen bond
Magnetic interaction
Molecule-based magnetism
Nitronyl nitroxide
Purine

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S0277-5387(01)00587-3

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@article{6f36a52aa1184d559da4e1fcb8e9f910,

title = "Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring",

abstract = "2-(Purin-8-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxide (Pu-NN) was designed and synthesized. Two crystalline phases (α- and β-phases) exhibiting different IR spectral patterns at the vNH region were obtained depending on the crystallizing condition. The temperature dependences of the magnetic susceptibility of these two phases followed Curie-Weiss law with θ = - 5.7 K (α-phase) and θ = - 0.3 K (β-phase) implying intermolecular antiferromagnetic interaction, which were quite different from that of parent benzimidazole derivative, 2-(benzimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazolyl-1-oxyl-3-oxide that formed a 1-D ferromagnetic chain induced by an intermolecular hydrogen bonding.",

keywords = "Hydrogen bond, Magnetic interaction, Molecule-based magnetism, Nitronyl nitroxide, Purine",

author = "Hideaki Nagashima and Naoki Yoshioka and Hidenari Inoue",

note = "Funding Information: This work was supported by the Grant-in-Aid for Scientific Research (No. 3022392) from the Ministry of Education, Science, Sports and Culture of the Japanese Government.",

year = "2001",

month = may,

day = "30",

doi = "10.1016/S0277-5387(01)00587-3",

language = "English",

volume = "20",

pages = "1151--1155",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Limited",

number = "11-14",

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TY - JOUR

T1 - Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring

AU - Nagashima, Hideaki

AU - Yoshioka, Naoki

AU - Inoue, Hidenari

N1 - Funding Information: This work was supported by the Grant-in-Aid for Scientific Research (No. 3022392) from the Ministry of Education, Science, Sports and Culture of the Japanese Government.

PY - 2001/5/30

Y1 - 2001/5/30

N2 - 2-(Purin-8-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxide (Pu-NN) was designed and synthesized. Two crystalline phases (α- and β-phases) exhibiting different IR spectral patterns at the vNH region were obtained depending on the crystallizing condition. The temperature dependences of the magnetic susceptibility of these two phases followed Curie-Weiss law with θ = - 5.7 K (α-phase) and θ = - 0.3 K (β-phase) implying intermolecular antiferromagnetic interaction, which were quite different from that of parent benzimidazole derivative, 2-(benzimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazolyl-1-oxyl-3-oxide that formed a 1-D ferromagnetic chain induced by an intermolecular hydrogen bonding.

AB - 2-(Purin-8-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-oxide (Pu-NN) was designed and synthesized. Two crystalline phases (α- and β-phases) exhibiting different IR spectral patterns at the vNH region were obtained depending on the crystallizing condition. The temperature dependences of the magnetic susceptibility of these two phases followed Curie-Weiss law with θ = - 5.7 K (α-phase) and θ = - 0.3 K (β-phase) implying intermolecular antiferromagnetic interaction, which were quite different from that of parent benzimidazole derivative, 2-(benzimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H- imidazolyl-1-oxyl-3-oxide that formed a 1-D ferromagnetic chain induced by an intermolecular hydrogen bonding.

KW - Hydrogen bond

KW - Magnetic interaction

KW - Molecule-based magnetism

KW - Nitronyl nitroxide

KW - Purine

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U2 - 10.1016/S0277-5387(01)00587-3

DO - 10.1016/S0277-5387(01)00587-3

M3 - Article

AN - SCOPUS:0035972458

VL - 20

SP - 1151

EP - 1155

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

IS - 11-14

ER -

Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring

Abstract

Keywords

ASJC Scopus subject areas

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