THEORETICAL-STUDIES OF FLUOROCARBONS .3. PRIMARY, SECONDARY, TERTIARY AND QUATERNARY CENTERS

被引:14
作者
COOPER, DL
ALLAN, NL
POWELL, RL
机构
[1] UNIV BRISTOL,DEPT THEORET CHEM,BRISTOL BS8 1TS,AVON,ENGLAND
[2] ICI CHEM & POLYMERS LTD,DEPT RES & TECHNOL,RUNCORN,CHESHIRE,ENGLAND
关键词
D O I
10.1016/S0022-1139(00)85036-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Quantum chemical calculations are used to examine the differences between fully fluorinated alkanes with primary, secondary, tertiary and quaternary centres. Systems studied include C(CF3)nF4-n (n=0-4), CF3[C(CF3)2]pCF3 (p=1-5), (CF3)2CF[C(CF3)2]q CF(CF3)2 (q=0-3) and CF3CF2[C(CF3)2]rC F2CF3 (r=0-3). In addition we compare systems which react with arenethiolate nucleophiles under mild conditions (e.g. cisperfluorodecalin and perfluoro(methylcyclohexane)) and those which do not (e.g. perfluorohexane and perfluorocyclohexane). A crude "lattice energy" model is used to investigate the likelihood of electron transfer, which is one possible mechanism for the unexpected reactivity. © 1990.
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收藏
页码:421 / 432
页数:12
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