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作者将下列两类矽烷以及两种氯代异丁烷进行气相(光照)氯化,找出二氯取代的产物,其两个氯原子的相互位置和原来矽烷裹有无矽氯键有很大关系。 (CH_3)_nSiCl_(4-n) (CH_3)_mSi(CH_2Cl)Cl_(3-m) n=2,3,4 m=1,2,3 在没有矽氯键的矽烷,两个氯原子取代在不同甲基上的产物比较取代在同一甲基上的为多,这和碳化氢的取代相同。在具有矽氯键的矽烷,二个氯原子取代在同一甲基上的产物比较取代在不同甲基上的为多,这和碳化氢的取代不同。作者认为矽氯键之所以有这种影响是因为它一方面阻尼α-位甲基氯化,另一方面还促进α-位氯甲基的继续氯化。
The authors gas-phase (photochemically) chlorinate two of the following two classes of silane and two of the chlorinated isobutanes to find the product of the dichloro-substituted product. The position of the two chlorine atoms is very large relative to the original position of the silane- relationship. (CH_3) _nSiCl_ (4-n) (CH_3) _mSi (CH_2Cl) Cl_ (3-m) n = 2,3,4 m = 1,2,3 In the absence of silica-bonded silanes, two chlorine atoms are substituted at Comparison of products on different methyl substituted more on the same methyl, which is the same as the replacement of hydrocarbon. In silanes with silicon-chlorine bonds, substitution of two chlorine atoms for the same methyl group is more substituted for different methyl groups than for the replacement of hydrocarbon. The authors conclude that silica chloride bonds have such an effect because they dampen α-methylchloride on the one hand, and on the other hand, continue the chlorination of α-chloromethyl.