acenaphthenyl [,æsə'næfθənil]
- acenaphthenyl的基本解释
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[化] (来自acena-phthene)苊基
- 更多网络例句与acenaphthenyl相关的网络例句 [注:此内容来源于网络,仅供参考]
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In order to improve the radiation resistance of condensed-type RTV silicone rubber, two kinds of crosslinking agents are synthesized successfully: triethoxysilane with acenaphthenyl groups m.p.
当三乙氧基硅烷和三乙氧基硅烷用作缩合型RTV硅橡胶的交联剂时,由于二者所含的稠环基团的空间位阻较大,因而样品硫化速度较慢。
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From the UV spectra, it can be found that the aromaticity of acenaphthenyl groups in C_2 gum is the largest. But there are 30 carbon atoms in the conjugated structure of condensed aromatics in C_1 gum and C_3 gum, while 28 carbon atoms in acenaphthenyl groups in C_2 gum.
但是,在C_1胶、C_2胶和C_3胶三者中,C_1胶侧链上的四苯基苯基和C_3胶侧链上的菲式多苯基苯基都含有30个碳原子,而C_2胶侧链上的苊式多苯基苯基含有28个碳原子,比前面二者小2个碳原子,理应其芳香性在三者之中最小,但事实却恰恰相反。
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So, the aromaticity of acenaphthenyl groups in C_2 gum should be the least. In order to explain the reason, quantum chemical calculation is utilized. The optimized geometrical structrures of condensed aromatics in C_1 gum, C_2 gum and C_3 gum are calculated at B3LYP/6-31G* levels. We find that some phenyl groups in acenaphthenyl groups are coplanar and have the largest conjugated structure.
为了解释其原因,我们利用量子力学方法进行了计算,研究了三种稠环基团在B3LYP/6-31G*基组水平下优化得到的几何结构,发现苊式多苯基苯基中的萘环和中间的苯环共面,电子离域性最大,而其他二者所有苯环都不共面,发生了明显地扭曲;同时,在优化几何结构的基础上,对三种化合物进行了前线分子轨道的分析,利用密度泛函理论方法(density function theory,DFT)计算了稠环基团的最高占有轨道和最低未占轨道之间的能量差,即能隙,发现C_2胶上苊式多苯基苯基的Eg最小,解释了C_2胶具有最好的辐射保护效果的原因。
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While all the phenyl groups in tetraphenylphenyl groups or benzophenanthrene groups are not coplanar. At the same time, by density function theory, the electronic energy gap between HOMO and LUMO frontier molecular orbitals of condensed aromatics are calculated and the Eg of acenaphthenyl groups in C_2 gum is the smallest, which explains the reason why C_2 gum has the best radiation protection effects.
利用甲基三氯硅烷和溴苯的格氏反应合成了甲基苯基二氯硅烷,用核磁分析证实了格氏反应中高沸点副产物为甲基二苯基氯硅烷;通过甲基苯基二氯硅烷和二甲基二氯硅烷的共水解,再裂解而制得含Me_2SiO链节的甲基苯基环硅氧烷混合物,进而利用碱胶开环聚合得到甲基苯基硅橡胶生胶;也可通过甲基苯基二氯硅烷水解所得甲基苯基环硅氧烷D_3~(3Ph、D_4~(4Ph_)与D_4开环聚合制得甲基苯基硅橡胶生胶。
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So, by the Diels-Alder reaction of tetraphenylcyclopentadienone, acenaphthenecyclone and benzophenanthrenecyclone with the vinyl groups in C gum, three kinds of polymethylvinylsilicone oil with condensed aromatics are synthesized respectively: polymethylvinylsilicone oil with tetraphenylphenyl groups (called C_1 gum for short), polymethylvinylsilicone oil with acenaphthenyl groups (C_2 gum) and polymethylvinylsilicone oil with benzophenanthrene groups (C3 gum).
根据此原则,利用四苯基环戊二烯酮、苊式环戊二烯酮和菲式环戊二烯酮与C胶上的乙烯基进行Diels—Alder反应,分别合成了三种含稠环基团的乙烯基硅油:四苯基苯基乙烯基硅油(C_1胶),苊式多苯基苯基乙烯基硅油(C_2胶)和菲式多苯基苯基乙烯基硅油(C_3胶),并根据~1HNMR谱图上不同氢原子的积分面积计算了三种胶中稠环基团和乙烯基的含量。
- 更多网络解释与acenaphthenyl相关的网络解释 [注:此内容来源于网络,仅供参考]
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acenaphthenyl:苊基
acenaphthene | 苊,萘嵌戊烷 | acenaphthenyl | 苊基 | acendrada | 白泥灰岩
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acenaphthenyl:乙烷合萘基;二氢苊基
伸乙烷合萘基;伸二氢苊基 acenaphtheneylene | 乙烷合萘基;二氢苊基 acenaphthenyl | 亚乙烷合萘基;亚二氢苊基 acenaphthenylidene