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.
| Original language | English |
|---|---|
| Pages (from-to) | 1151-1155 |
| Number of pages | 5 |
| Journal | Polyhedron |
| Volume | 20 |
| Issue number | 11-14 |
| DOIs | |
| Publication status | Published - 2001 May 30 |
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Keywords
- Hydrogen bond
- Magnetic interaction
- Molecule-based magnetism
- Nitronyl nitroxide
- Purine
ASJC Scopus subject areas
- Biochemistry
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring. / Nagashima, Hideaki; Yoshioka, Naoki; Inoue, Hidenari.
In: Polyhedron, Vol. 20, No. 11-14, 30.05.2001, p. 1151-1155.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and magnetic properties of nitronyl nitroxide radicals carrying a purine ring
AU - Nagashima, Hideaki
AU - Yoshioka, Naoki
AU - Inoue, Hidenari
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
UR - http://www.scopus.com/inward/record.url?scp=0035972458&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035972458&partnerID=8YFLogxK
U2 - 10.1016/S0277-5387(01)00587-3
DO - 10.1016/S0277-5387(01)00587-3
M3 - Article
VL - 20
SP - 1151
EP - 1155
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
IS - 11-14
ER -