There is considerable confusion when naming vibrations in infrared and Raman spectra. One of the most common errors is the identification of some stretching and bending vibrations as “asymmetric”. There are no asymmetric vibrations as such vibrations incur rotations and translations. The correct term is antisymmetric and it is demonstrated, through molecular symmetry operations, why this is the correct term.

中文翻译：

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分子振动不是不对称的

在命名红外和拉曼光谱中的振动时存在相当大的混淆。最常见的错误之一是将一些拉伸和弯曲振动识别为“不对称”。不存在不对称振动，因为这种振动会引起旋转和平移。正确的术语是反对称的，它通过分子对称操作证明了为什么这是正确的术语。