炔烃

Based on characteristics and connectivity of the groups in molecules,the group contribution method and topological method was combined together,a new method was developed which can be used to calculate the density of alkyne from molecular structure.

根据分子中基团的特性和连接性，将基团贡献法和拓扑方法结合在一起，发展了一种计算炔烃密度的新方法———基团键贡献法，该方法具有基团贡献法适用范围广和拓扑方法计算结果准确可靠的特点。

I was severely a splash, to my "bullets" used up, and bent down to get water, alkyne "splash", and I high center of gravity, was sister to promote the bathtub.

刚才我那狠狠一泼，将我的"子弹"用完了，弯下腰去装水，炔烃"扑通"一声，我重心不稳，被姐姐推进了浴缸。

Write the structural formulas for a cyclic alkyne hydrocarbon with the fewest number of C's which has a meso stereoisomers.

答：写出有内消旋体的且含有碳原子数最少的环炔烃，给出内消旋体的结构式，并命名这些化合物

Write the structural formula for an alkyne hydrocarbon having the fewest number of C's, which has geometric isomers, and give the IUPAC name for both geometric isomers.

答：写出有几何异构体的，含碳原子数最少的炔烃的结构式，并对所有的异构体用IUPAC命名法命名

This thesis is mainly about the research on the synthesis, structures and reactivity of di-or tri-metal bridging carbene and bridging carbyne complexes

过渡金属桥卡宾和桥卡拜络合物本身即为简单的金属原子簇化合物或是合成金属原子簇化合物的重要前体，在有机合成和烯炔烃的聚合和异构化等催化反应中有广阔的应用前景以及在某些过渡金属参与的反应的机理研究中具有重要的研究价值。

We investigate the reaction involving alkynes and α-halophenylethanone in presence of catalyzer to occur nucleophilic addition reaction.

我们还对炔烃与α-卤代苯乙酮在催化剂存在下发生亲核加成反应做了一系列的探索。

Addition Reactions to Alkynes, Hydrogenation, Halogenation and HX.

炔烃的加成反应，氢化，卤化和HX。

Table 2 shows names for some alkyl groups, alkanes, alkenes and alkynes.

表2显示了一些烷基、烷烃、烯烃及炔烃的命名。

We are interesting in the synthesis and the application of 1,2,3-triazoles inthis paper, which including the following:In the first chapter, we reviewed mainly the development of Huisgen\'s 1,3-dipolar[3+2]-cycloaddition from organoazides and alkynes or alkenes to synthize1,2,3-triazoles in recent years.

本论文针对1，2，3-三唑的合成和应用，主要包括以下方面：第一章对近几年来1，2，3-三唑合成研究进行了概述，总结了有机叠氮和炔烃、烯烃的1，3-偶极环加成反应以及其他方法合成三唑的进展。

However, in some circumstances, such selective hydrogenation catalysts can produce green oil by oligomerizing the acetylenes and diolefins.

然而，在某些情况下，这种选择性加氢催化剂可通过使炔烃和二烯烃低聚而产生绿油。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。