Optical Rotatory Dispersion

• The rotation of polarised light as a function of light wavelength
  • Unequal refractive indices of left and right polarized light
• Reaxys property search code: ORD exists
• 1955 onwards: New generations of polarimeters.
• Modern polarimeters do now measure from ~250 - 880 nm.
  • Now no reason not to capture response from a wider range of chromophores!

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  But the interpretation subject to same problems as ORP