ANTIFERROMAGNETIC RESONANCE OF ORGANIC FREE RADICAL POLYCRYSTALLINE 1,3-BISDIPHENYLENE-2-(p-CHLOROPHENYL)-ALLYL
The paramagnetic resonance of polycrystalline 1,3-bisdiphenylene-2-(p-chlorophenyl)-allyl can be observed in the temperature region above 3.25 K. Below the temperature the anomalous resonance absorptions, which may be the antiferromagnetic resonance, were observed. This may be the first experimental observation in organic free radicals.