摘要
属于H_(m)F_(2-m)Si(CH_(2)CH_(5))_(n)(CHCH_(2))_(2-n)型的九个化合物可以系统地合成出来^([1])。本文报导它们的质子核磁共振谱。 (一)核磁共振样品的制备 硅烷及其氟取代衍生物易氧化,不能与空气接触;单氟化物在室温下会发生歧化反应;含乙烯基的硅烷能自聚为白色的固态物,使得对它们的核磁共振研究遇到不少困难。因而,在该类化合物中只有个别的单氟化物和二氟化物见著于文献^([2,3])。
The nuclear magnetic resonance spcclra of the compounds with the formula H_(m)F_(2-m)Si(CH_(2)CH_(5))_(n)(CHCH_(2))_(2-n)are investigated, where m and n represent the integers 0,1 or 2. For monofluoro-compounds the coupling constant JHF is 52.2Hz. Because of the effect of fluorine atom on the protons, of Si-H, Si-CHCH_(2), Si-CH_(2)- and CH_(3), their chemical shifts have a downficld shift of 0.60-1.00, 0.15, 0.05-0.15 and 0.10ppm, respectively, from their parents. Subsequent to the substitution of ethyl by vinyl groups the chemical shift of Si-H protons has downfield shift of 0.20-0.60 ppm from the parents. But no significant effect can be observed on other protons. The three protons in vinyl group possess the same chemical shift values.
作者
宏存茂
唐一怒
Hong Cunmao;Tang Yinoo(Department of Chemistry,Peking University,Beijing;Department of Chemistry,Texas A&M University,U.S.A.)
出处
《高等学校化学学报》
SCIE
EI
CAS
1985年第9期837-839,共3页
Chemical Journal of Chinese Universities
基金
美国能源部资助。
