分子

The macro conjugated molecule fluorene derivative has 2, 3, 6, 7-tetraamino-9, 9'-dialkyl fluorene as a raw material which is added to an organic solvent respectively together with phenanthrenequinone, acenaphthene quinone or bis-carbonyl pyrene derivatives and strong base; under the protection of inert gas, reflux reaction is carried out to the materials, so as to prepare a series of trapezoidal conjugated molecules containing fluorine structures.

本发明涉及一类含大共轭分子的芴衍生物及其制备方法，大共轭分子芴衍生物是将原料2，3，6，7-四氨基-9，9'-二烷基芴，分别与菲醌、苊醌或二羰基芘的衍生物以及强碱加入到有机溶剂中，在惰性气体的保护下，回流反应制得一系列含有芴结构的梯形共轭分子。

The kinds of compounds with AIE, AIEE and CIEE are summarized, mainly including siloles, substituted ethenes (mainly including fulvene and DPDSB style), CN-MBE, pyran, biphenyl compounds and polymers.

侧重总结了silole型、取代乙烯型（主要包括亚甲基环戊二烯型和DPDSB型）、腈取代二苯乙烯型、吡喃型、联苯型等小分子化合物和少数高分子的结构与AIE性质之间的关系，以及为解释AIE现象所提出的限制分子内的转动、避免非辐射去活、构象扭曲避免形成excimer、J－聚集态以及形成分子间的C-H/π键等理论。

The charge-remote fragmentation of protonated alkylamines and the fragmentation of alkylamine ions can be explaned by using the radical mechanism and hydrogen abstraction of intramolecule, respectively.

自由基机理可以解释质子化脂肪胺分子的远电荷反应。分子内氢抽取可以解释脂肪胺分子离子的碎裂反应。

This method can be used to calculate the molar refraction of alkyne from molecular structure.

基团贡献法是根据分子中的基团计算分子性能的方法，具有适用范围广的特点，但对同分异构体的区分能力较差，对分子性能的计算结果误差较大。

Anethole accounted for 82.65% of the whole oil. Selective isolation of anethole form the volatile oil was carried out using an inclusion crystalline method with 1,1,6,6- tetraphenylhexa- 2,4-diyne-1,6-diol inclusion complex with anethole . The crystal structure of the inclusion complex was determined by IR, 1^H NMR and single crystal XRD techniques.

采用包结结晶方法对小茴香挥发油中的对-丙烯基茴醚进行了选择性分离，以1，1，6，6-四苯基-2，4-已二炔-1，6-二醇作为主体分子，小茴香挥发油中的对-丙烯基茴香醚作为客体分子，D.D选择性地与之形成超分子包结物晶体。

At the same time, the channel framework formed by hosts could recognize p -anisaldehyde and form exceptive structural inclusion compound at a molar ratio of 2∶1, which is a supramolecular isomer of inclusion compound at a molar ratio of 1∶2.

同时， 主体分子形成的隧道框架对茴香醛具有识别作用，形成2∶1物质的量比的特殊结构包结物晶体，它是主客体分子物质的量比为1∶2包结物的超分子异构体。

Orion KL hot molecular core is known to be rich in organic molecules; the brightness ( 105L ) and proximity ( 450 pc) of Orion KL make it a primary target for molecular line search and astrochemistry study.

猎户座KL热分子云核是个已知富含有机分子的天体，它的亮度(~ 105 Lsun)以及相对於太阳如此近的距离(~ 450 pc)非常适合我们来寻找在太空中尚未被指认出来的重要分子以及做天文化学上的研究。

With quantum chemical calculation, all the information about electronic and spatial structures of specific compounds can be obtained, including molecular orbital energy level, atomic charge density, polarizability, and electrostatic charge of molecules.

通过对化合物进行量子化学计算，可以获得有关分子的电子结构和立体结构信息，如分子轨道能级、原子的电荷密度、极化率以及分子的静电荷等。

We are in a long struggle against terrorists and extremists who follow a h ate ful ideology and seek to establish \ a totalitarian emp ire from Spain to Indonesia,we fight against extremists who desire safe h avens and we're willing to kill innocen ts anywhere to achieve their object ives .

我们正与恐怖分子与极端分子进行长期斗争，他们受到憎恨思想意识的驱使寻求建立一个横夸西班牙与印尼的极端主义帝国。我们要与那些企图找寻不受军事攻击地区的极端主义分子斗争到底，阻止他们在任何地方杀害无辜平民。

The development and application of supramolecular chemistry and NMR were reviewed.Based on that,several benzimidazole derivatives were synthesized from o-phenylenediamine.

本文在总结超分子化学及核磁共振的发展及应用的基础上，以邻苯二胺为原料，合成了几种苯并咪唑衍生物，作为分子识别中的客体小分子。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。