1) dumbbell-shape compound
哑铃型化合物
1.
The dumbbell-shape compounds, quaternary ammonium salts(3) of 4,4′-bipyridines bridged 2,2′-bipyridine in yields of about 90%, were synthesized by solid grinding at room temperature from quaternary ammonium salts(2) of N-substituted 4,4′-bipyridine which were prepared via the reaction of 4,4′-bipyridine and tosylate(or benzyl bromide) containing stopper in yields of 60%~90%.
采用室温固相研磨的方法,4,4′-联吡啶与连有阻塞基的乙氧乙醇磺酸酯(或苄溴)反应,得到单取代的4,4′-联吡啶六氟磷酸盐(2),2再与α,α′-二(溴甲基)-2,2′-联吡啶反应,得到哑铃型化合物——2,2′-联吡啶桥连的双-4,4′-联吡啶六氟磷酸盐(3),收率约90%。
2) dumbbell-shaped compound
哑铃型化合物
1.
Molecular shuttle locate foreland research field in organic chemistry, they are composed of one cyclic compound and a dumbbell-shaped compound.
哑铃型化合物作为构筑轮烷和分子梭的关键砌块,本文综述了现在所报道的含4,4’-联吡啶哑铃型化合物的类型和合成方法,4,4’-联吡啶的成盐反应一般是以无水乙腈为溶剂,加热回流数天,产率很低,同时有副产物产生,产物的分离、纯化困难。
3) Dumbbell
[英]['dʌmbel] [美]['dʌm,bɛl]
哑铃化合物
4) Dumbbell model
哑铃模型
5) dumbbell-shaped
哑铃型
1.
Surgical anatomy of the hypoglossal canal and the research of surgical approach for dumbbell-shaped hypoglossal schwannoma;
舌下神经管解剖学与哑铃型舌下神经鞘瘤手术入路研究
2.
Study on Calculating Methods of Dumbbell-shaped CFST Arch Bridge;
哑铃型钢管混凝土拱桥的计算方法研究
6) Dumbbell
[英]['dʌmbel] [美]['dʌm,bɛl]
哑铃型
1.
Finite element methods on ultimate load-carrying capacity of CFST dumbbell shaped short columns under axial loads;
钢管混凝土哑铃型轴压构件极限承载力有限元分析
2.
According to construction steel tube concrete arch bridge,this paper has introduced all kinds of intital stress and reckoning,a computing program was introduced and a 100 m Dumbbell-shaped Concrete Filled Steel Tube Arch were studied.
根据钢管混凝土拱桥施工顺序,介绍了初应力的种类和计算方法,并根据理论编制程序,计算一哑铃型拱肋,分析了初应力对哑铃型拱肋的极限承载力影响。
3.
Bending of concrete filled steel tubular (CFST) dumbbell-shaped beams is studied experimentally.
进行了钢管混凝土哑铃型梁的试验与分析。
补充资料：闭合型配位化合物
分子式：
CAS号：
性质：具有闭合型簇结构的配位化合物。相应骨架多面体的所有顶点均有骨架原子占据，是完整的多面体。如十二羰基合四钴Co4(CO)12和十羰基3-己炔(乙基乙炔)合四钴Co4(CH3CH2C≡CCH2CH3)(CO)10。
CAS号：
性质：具有闭合型簇结构的配位化合物。相应骨架多面体的所有顶点均有骨架原子占据，是完整的多面体。如十二羰基合四钴Co4(CO)12和十羰基3-己炔(乙基乙炔)合四钴Co4(CH3CH2C≡CCH2CH3)(CO)10。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条