313472-98-9Relevant academic research and scientific papers
Magnetic interactions in hydrogen-bonded networks of hydroxymethyl-substituted phenyl nitronyl nitroxides
Endtner, Robin,Rentschler, Eva,Blaeser, Dieter,Boese, Roland,Sustmann, Reiner
, p. 3347 - 3352 (2007/10/03)
The ortho-, meta-, and para-Hydroxymethyl-substituted 4,4,5,5-tetramethyl-3-oxyl-2-phenylimidazoline 1-oxides (1-3) were synthesized and characterized by X-ray crystallography. The magnetic susceptibility was determined by temperature-dependent SQUID measurements. The nitronyl nitroxides 1 and 3 display a paramagnetic susceptibility which follows the Curie-Weiss law. Weak ferromagnetic interactions can be recognized at very low temperature. The nitronyl nitroxide 2 shows temperature-dependent antiferro-magnetic behavior, which can be fitted perfectly with the Heisenberg linear-chain theory with an intrachain exchange interaction of -18.43 cm-1.
