ALKYLAMMONIUM ION RADICALS IN LAYERED IONIC-CRYSTALS OF (CNH2N- N=1, 2, 3(1NH3)2CDCL4 )

Single crystals of (CnH2n+1NH3)2CdCl4; n= 1, 2, 3 were irradiated with Co-60 gamma-rays at 77 K. Electron paramagnetic resonance measurement s revealed that chlorine molecular ions, Cl2- were formed with gamma-i rradiation at 77 K. The crystals irradiated at 77 K were warmed to 300 K for n = 1, 2 and to 200 K for n = 3. The Cl2- ions became unstable at temperatures higher than 100 K. Then there appeared quite different features of the electron paramagnetic resonance signals, which had be en buried under the signals of Cl2- at 77 K. It was confirmed by the a nalysis of the electron paramagnetic resonance signals that the alkyla mmonium ion radicals were formed. The alkylammonium ions are composed of double sheets, which are similar to the lipid bilayers of plasma me mbranes. A model of radiation effects on membranes is proposed from th e present results.