1). J. Phys. Soc. Jpn. 69 (2000) pp. 1008-1011;
Singlet Ground States in an Organic S= 1/2 Spin Ladder and a Novel Double Spin Chain of Ferromagnetic Dimers Formed by an Organic Tetraradical; Keiichi Katoh, Yuko Hosokoshi, Katsuya Inoue and Tsuneaki Goto;
- DOI:
http://dx.doi.org/10.1143/JPSJ.69.1008
Stable Organic Radicals Possessing Hydrogen Bond Sites [XVIII] Formation of ferromagnetic dimer in 5-chloroindole nitronyl nitroxide crystal; YAMAMOTO KEISUKE, NAGASHIMA HIDEAKI, INOUE HIDENARI, YOSHIOKA NAOKI;
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http://sciencelinks.jp/j-east/article/200416/000020041604A0463986.php