Optical rotational dispersion
The optical rotation dispersion (ORD), also known as the optical rotation dispersion curve , is a physicochemical analysis method for optically active chemical substances. The specific rotation value [α] (or the molar rotation value [Φ]) is measured as a function of the wavelength λ of the linearly polarized light, i.e. the size :
![{\ displaystyle \ left [\ alpha \ right] (\ lambda)}](https://wikimedia.org/api/rest_v1/media/math/render/svg/5948c97c262dbe00c0c7e86525765b74b4752d55)
- If the examined optically active substance has an absorption maximum in the examined wavelength range, the ORD curve is "abnormal" because of the Cotton effect
- but has the examined optically active substance no absorption maximum in the examined wavelength range , so is called the curve as a "simple" (English plain ).
Individual evidence
- ↑ Wolfgang Bähr, Hans Theobald: Organic stereochemistry. Springer Verlag, 1973, ISBN 3-540-06339-0 , pp. 72-73.