An ESR study of radiation-chemical transformation of 4,4'(5')-di-(tert-butylcyclohexano)-18-crown-6 and its solution in 1-octanol at 77 K

作者：Zakurdaeva O A; Nesterov S V^*; Feldman V I

来源：Journal of Radioanalytical and Nuclear Chemistry, 2010, 284(3): 641-645.

DOI：10.1007/s10967-010-0529-1

• Di-(tert-butylcyclohexano)-18-crown-6
• 1-Octanol
• Radiolysis
• ESR spectroscopy
• Radicals

Paramagnetic products stabilized in both 4,4'(5')-di-(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) and its solution in 1-octanol upon low temperature (77 K) X-rays irradiation were studied by ESR spectroscopy. Macrocyclic -O-ASH-CH(2)- radicals and acyclic O = C(H)-ASH-O- radicals were found as main radiolysis products in neat DtBuCH18C6. Fraction of acyclic radicals resulting from the macrocycle cleavage was about 50%. No radical products resulted from t-Bu and cyclohexyl fragments were observed. It was concluded that the primary events were essentially concerned with ionization of the polyether moiety. Irradiation of frozen DtBuCH18C6 solutions in 1-octanol resulted in formation of radicals both from crown ether and alcohol.

• 出版日期2010-6