中性分子是指不显磁性电性的分子。分子四周的电子有的绕单个原子核公转,有的同时绕分子中所有核转(共轭现象)。电子是一个负电荷,其自旋和绕核公转都会根据右手定则产生相应方向的洛伦兹力(微观磁力)。当分子中的每个核,其环绕电子自旋产生磁场刚好互相抵消时。若环绕整个分子的电子自旋产生电磁场亦刚好抵消时(即分子中不带极性键或极性键刚好对称而互相抵消),这个分子就不显磁性电性。中性分子组成的材料常用作绝缘材料。
后者涉及氢转移的同时逐出中性分子碎片(N,O-双齿配体)。
The latter process involves the expulsion of the neutral species (N, O-bidentate ligands), accompanied by hydrogen migration.
对光谱进行理论指认并讨论了从中性分子到离子谱带红移的原因。
The spectra have been assigned theoretically and the red shift of spectral band from molecule to cation has been discussed.
平缓衰减区中的平均电子密度约为中性分子密度的十万分之一,并且可以覆盖较大范围。
The average electron density in linear attenuation zone is about 10 ~ (-5) of neutral particle density, and can overcast wider area.
So if we add them all up, there should be no net charge on the molecule, if the molecule is neutral.
因此如果我们把它们都加起来,这个分子上应该没有净电荷,如果这个分子是中性的话。
The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.
这分子是电中性的,但右边要带一点负电荷,而左边要带一点正电荷。
And what's important to keep in mind about formal charge is if we have a neutral atom, such as we did in thionyl chloride here, the sum of the individual formal charges on individual atoms within the molecule have to equal 0.
而关于形式电荷记住一点是很重要的,那就是如果我们有一个中性原子,比如亚硫酰氯,那么这个分子中的所有原子的,形式电荷之和应该等于零。
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