147986-93-4Relevant academic research and scientific papers
Crystals of Antiferromagnetic 1,3-Butadiyne and Ferromagnetic 1,3,5-Hexatriyne Both Carrying 4-Chloro-3-(N-tert-butyl-N-oxy-amino)phenyl as Persistent Free Radical Substituent
Inoue, Katsuya,Iwamura, Hiizu
, p. 89 - 98 (2007/10/02)
Crystalline samples of 1--1,3-butadiyne 1 and -1,3,5-hexatriyne 2 have been prepared and were found to exhibit antiferro- and ferromagnetic interradical interactions, respectively.In reference to its crystal structure, the former behavior was interpreted in terms of a dimer chain in which J/kB = -1.2(3) K and Θ = -0.2 K.The magnetic susceptibility data of 2 were analyzed in terms of a 1-D Heisenberg model to give J/kB = +1.4(8) K.Ferromagnetic stacking of the phenyl rings is presumed to be operative.
