They are said to be conformational isomers also called conformers.
它们叫做构象异构体，也叫做异象体。
The trans-conformers are more stable than the cis-conformers in the relative stabilities.
在相对稳定性方面，反式异构体比顺式异构体稳定。
In this paper, binding energy spectra and orbital momentum distributions of the four most stable conformers of Proline are investigated.
本文主要讨论了脯氨酸分子最稳定的四种构象的束缚能谱和轨道电子动量分布。
Theories of nature bond orbital(NBO)and atoms in molecules (AIM) were used to discuss bond nature and relative stabilities of such conformers.
利用自然键轨道理论（NBO）和分子中的原子理论（AIM）分析了这些异构体的成键特征、相对稳定性。
The result shows that MP2, QCISD, B3LYP can gain the gauche and anti conformers of oxalyl iodide, which is in good agreement with configuration of oxalyl halides in experiment.
结果表明，在不同基组水平上，由MP2，QCISD，B3LYP方法均能得到草酰碘分子的交叉式构型和平面反式构型，与实验所得草酰卤化物的构型完全相符。
The result shows that MP2, QCISD, B3LYP can gain the gauche and anti conformers of oxalyl iodide, which is in good agreement with configuration of oxalyl halides in experiment.
结果表明，在不同基组水平上，由MP2，QCISD，B3LYP方法均能得到草酰碘分子的交叉式构型和平面反式构型，与实验所得草酰卤化物的构型完全相符。
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