1)  hydrogen bond ring
五元环
1.
These are the interactions between the special hydrogen atoms, the interactions in the 5-membered ring, and the interactions in the hydrogen bond ring.
从特殊氢原子之间的相互作用及其所形成氢键环和五元环的结构特点,探讨了影响二肽构象稳定性的因素,并估算了相关弱相互作用的能量。
2)  fifteen-ring,fifteen-membered ring
十五元环
3)  benzo five-membered ring
苯并五元环
1.
The geometry structures of squaraine derivatives substituted by benzo five-membered ring moi-ety were optimized and electronic structures were calculated with HF/6-31G* method.
利用从头算HF/6-31G*方法对用苯并五元环取代的方酸衍生物体系SQ1～SQ15进行几何构型优化和电子结构计算。
4)  IPR rule
分离五元环规则
5)  five membered azasugar
五元环氮杂糖
6)  Five-membered cyclic carbonate
五元环状碳酸酯
1.
In this paper, a novel five-membered cyclic carbonate with hydroxy group being protected (3-benzyloxy-1, 2-propanediolcyclic carbonate, BPC) was synthesize.
所得主要结论如下: (1)首次以新的合成路线,用苯甲醇、3-氯-1,2-丙二醇先合成了含保护的羟基的五元环状碳酸酯的中间体,合成过程仅两步反应,产率85。
参考词条
补充资料：五甲基五乙烯基环五硅氧烷
CAS：17704-22-2
分子式：C15H30O5Si5
分子质量：430.82
沸点：261℃
中文名称：五甲基五乙烯基环五硅氧烷
英文名称：Pentamethylpentavinyl cyclopentasiloxane
2,4,6,8,10-pentaethenyl-2,4,6,8,10-pentamethyl-cyclopentasiloxan
pentavinylpentamethylcyclopentasiloxane
2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinyl-cyclopentasiloxane
说明：补充资料仅用于学习参考，请勿用于其它任何用途。