作者:Lars Gille、Reinhard Stoesser
DOI:10.1016/0022-1139(94)03118-5
日期:1994.11
The formation of fluoroalkyl radicals in liquid chlorofluorocarbons (CF2Cl-CFCl2, CFCl3, CFCl2-CH3, CHF2-CF2-CF2Cl,CF3-CFH-CF3 and CCl4) has been investigated by means of the spin trapping technique and ESR spectroscopy. It is shown that the primary fluoroalkyl radicals which were generated in these compounds by ionising radiation are preferably formed by bond cleavage at carbon atoms attached to one
通过以下方法研究了液态氯氟烃(CF 2 Cl-CFCl 2,CFCl 3,CFCl 2 -CH3,CHF 2 -CF 2 -CF 2 Cl,CF 3 -CFH-CF 3和CCl 4)中氟烷基的形成。自旋捕获技术和ESR光谱学。已经表明,通过电离辐射在这些化合物中产生的伯氟代烷基优选是通过在与一个氟原子相连的碳原子上的键断裂而形成的。除了在含氯化合物中释放氯原子外,在CHF 2 -CF 2 -CF 2中还检测到Cl和CF 3 -CFH-CF 3氟原子。通过从形成的自由基的比较γ-照射CF 2 CL-CFCL 2(CFC-113)和从CF 2 CL-CFClI或CF 2 I-CFCL 2通过锌还原,它证明了在CFC-113两者CF 2 -形成CFCl 2和CFCl-CF 2 Cl自由基,而在含碘的同系物中,有利于一种物种的形成。