Magnetic behavior of tetrakis[4-(N-tert-butyl-N-oxylamino)pyridine]bis(isocyanato-N)cobalt(II) in frozen solution

Shinji Kanegawa; Satoru Karasawa; Motohiro Nakano; Noboru Koga

doi:10.1039/b403524k

Magnetic behavior of tetrakis[4-(N-tert-butyl-N-oxylamino)pyridine]bis(isocyanato-N)cobalt(II) in frozen solution

Chem Commun (Camb). 2004 Aug 7:(15):1750-1. doi: 10.1039/b403524k. Epub 2004 Jun 24.

Authors

Shinji Kanegawa¹, Satoru Karasawa, Motohiro Nakano, Noboru Koga

Affiliation

¹ Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.

PMID: 15278168
DOI: 10.1039/b403524k

Abstract

A complex of cobalt(II)(OCN)(2) coordinated with four pyridines having a stable tert-butyl aminoxyl exhibited in frozen MTHF a slow magnetic relaxation for the reorientation of magnetization with activation barrier, Delta/k(B) = 50 K, and a hysteresis loop having a fast relaxation at 0 Oe below 2.5 K.