Ferromagnetic and Antiferromagnetic Phases of 4-(4-Iodobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-yloxyl
書誌事項
- タイトル別名
-
- Ferromagnetic and Antiferromagnetic Pha
この論文をさがす
抄録
<jats:title>Abstract</jats:title> <jats:p>Temperature dependences of d.c. magnetic susceptibilities and magnetizations were measured for two different crystallographic phases of 4-(4-iodobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-yloxyl. Intermolecular ferromagnetic (Weiss temperature θ = +0.71 K) and antiferromagnetic (θ = −0.23 K) interactions were found for α- and β-phases, respectively, in the magnetic measurements above 1.8 K; the former phase showed a bulk ferromagnetic transition at 0.28 K. Based on the X-ray crystallographic data, intermolecular magnetic interactions are discussed. In the α-phase crystal, NO-radical sites form two-dimensional zigzag sheets. The ferromagnetic interaction within the sheet can be interpreted in terms of a β-hydrogen mechanism, ON(↑)–Cα(↓)–Cβ(↑)–Hβ(↓)···(↑)ON<, in which the magnetic interaction is transmitted by β-hydrogens. A dimer structure was found in the β-phase crystal, and direct exchange and/or dipole interactions between N–O radicals seem to be the main origin of the antiferromagnetic interaction.</jats:p>
収録刊行物
-
- Bulletin of the Chemical Society of Japan
-
Bulletin of the Chemical Society of Japan 71 (11), 2583-2587, 1998-11
Tokyo : Chemical Society of Japan
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1522543654804120960
-
- NII論文ID
- 10008938376
-
- NII書誌ID
- AA00580132
-
- ISSN
- 00092673
- 13480634
-
- NDL書誌ID
- 4603247
-
- 本文言語コード
- en
-
- NDL 雑誌分類
-
- ZP1(科学技術--化学・化学工業)
-
- データソース種別
-
- NDL
- Crossref
- CiNii Articles