分子对称性

利用分子对称性对矩阵进行分类。

The matrix elements can be grouped into shells by means of the molecular symmetry .

利用分子对称性简化天然有机产物合成设计的策略

The strategy of simplifying synthetic design in organic natural products by taking advantage of molecular symmetry

HmX型非金属氢化物的熵与分子对称性的关系

The relation between the entropy of h_mx type non-metal hydrides and symmetry

通过实例介绍了运用HMO理论根据分子对称性获得共轭分子简并能级波函数的一种方法。

This paper introduces a new method to calculate wave function of degenerate energy lev-el for conjugated molecules by HMO theory in the light of molecular symmetry .

提供了研究分子对称性的一种方法。

This paper illustrates a method to study the symmetry of molecules .

电子态跃迁中的分子对称性

The Molecular Symmetry Properties for Electronic Transition

分子对称性和手性的研究是化学和生物学的重要课题之一。

The study of the molecular symmetry and chirality is one of the popular subjects in chemistry and biology .

告诉我们关于，And，the，sigma，tells，us，something，about，the，分子轨道对称性的信息，特别是它关于键轴是圆柱对称的。

Sigma symmetry of this molecular orbital , specifically that it 's cylindrically symmetric about the bond axis .

C2H2在Ru（10■0）表面上的分子轨道对称性

Orbital Symmetry of the Acetylene on Ru ( 10 ■ 0 ) Surface

以3DMAX和VISUALBASIC为主开发工具，制作了既有交互功能又有自播放功能的分子轨道对称性及其反应机理模拟的多媒体软件。

The multimedia software simulating the symmetry of molecular orbital and chemical reaction mechanism is programmed by 3D MAX and Visual Basic .

并以多氯联苯（PCBs）为例进行了细致讨论：基于分子的对称性，209种PCBs同系物被分为七组。

Based on molecular symmetry , PCBs are classified into seven groups .

关于分子轨道对称性守恒原理论对称性与守恒律

ON THE CONSERVATION OF MOLECULAR ORBITAL SYMMETRY Symmetry and Principle of Conservation

双原子分子的对称性与离解极限

Diatomic Molecular Symmetry and Dissociation Limit

同核双原子分子中对称性的应用

Symmetry application in homonuclear diatomic molecules

结论提高整个分子的对称性，或降低分子的取代基的复杂程度，对延长该类药物的降压时间是有利的。

Conclusion The QSAR indicates that the antihypertensive duration time of the compounds could be prolonged by enhancement in molecular symmetry or simplification of the molecular substituents .

把构象电子跃迁理论用于协同反应，由无辐射跃迁哈密顿量证明分子轨道对称性守恒。并由电子序仑作用，把这个原理推广为轨道&自旋对称性守恒。

The conservation of orbital symmetry is proved on the basis of the theory of conformation-electron transitions and it is generalized to include spin symmetry on account of Coulomb transition .

Ru（1010）表面上正己烷分子轨道的对称性

Orbital Symmetry of the Hexane on Ru ( 1010 ) surface

但He（H2）由于分子具有球对称性，分子间的吸引力是由电四极矩的相互作用产生的。

As there is a property of Spherically Symmetric in He ( H_2 ) molecules , the mutual attraction between molecules is due to electric quadrupole interaction .

根据CD4分子的C3v对称性，选取了Jordan和Gilbert提出的半经验势能面。

The semiempirical potential energy surface which has been developed by Jordan and Gilbert is employed .

通过所得的SERS光谱进行分析，可以知道C60分子会因为对称性下降而产生峰的分裂，从实验结果中我们很好的证明了这一结论。

SERS spectra obtained through the analysis , we can see that because of the symmetry of C60 molecules decreased peak splitting arising from the experimental results , we prove that good this conclusion .

关于分子和晶体对称性的几个问题

Some problems of the symmetry of molecules and crystals

利用二色直线群表征了某些聚合物分子链的对称性；

Some ordered macromolecular chains in polymer crystals were characterized by dichromatic line groups .

分子的模糊对称性

The Molecular Fuzzy Symmetry

接着注入电荷，发现虽然原子之间的键长发生了变化但是分子结构的对称性几乎没变。

After charge injecting , the bond lengths change , but the symmetry of molecular structure hardly change .

激光引起的无热激活分解反应中只有一个单键的双原子分子排斥态对称性的研究

Study on symmetries of repulsive states of diatomic molecules that only have one single bond in laser-induced dissociation without thermal excited activation

在激光偏振喇曼光谱中不同的喇曼频移对应的谱线退偏比不同，而谱线的退偏比又是判断分子结构的对称性及简振振动模式对称性的一个重要依据。

In the polarized laser Raman spectrum , the depolarization ratio of the different Raman shift is different , while the depolarization ratio of Raman spectrum is an important gist in judging symmetry property of molecular structure and the normal vibration mode . There are three chapters in this paper .

分析了CO分子的分布的对称性和覆盖范围及纳米小球间的相互影响。

We analyzed the symmetry of the distribution of CO molecules , the coverage range , and the influence among nanoparticles .

meso-位苯基取代使得卟吩骨架的对称性从D2h退化到C2v，整个分子也呈C2v对称性；

The meso-phenyl substituents make the D_ ( 2h ) symmetry of porphine skeleton in TPPH_2 reduce to the C_ ( 2v ) symmetry , the total molecular structure is also a C_ ( 2v ) symmetry ;

所以这个分子是对称非极性的。

And yet , the molecule is symmetric and nonpolar .

三原子分子振动谱的对称性研究

Symmetry of Rotation Vibration Spectra for Triatomic Molecule