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。

youdao

VB theory and molecular orbital (mo) theory are the two most influential quantum-mechanical theories of chemical structure and nature of the chemical bond nowadays.

VB理论和分子轨道(MO)理论是当今说明化学结构和化学键本质的最有影响的量子力学理论。

youdao