Difference between Racemic Mixture and Meso Compound - QS Study
QS Study

Difference between Racemic mixture and Meso compound:

Racemic mixture

  • The equimolar mixture of two enantiomers is called raccmic mixture e.g (+) and (-) lactic acid forms (±) – lactic acid as racemic mixture.
  • Raremic mixture is optically inactive due to external compensation.
  • It can be separated into two enatiomers which are optically active.
  • Racemic mixture may be formed from one or more than two asymmetric centres.

Meso compound

  • A meso compound has at least two identical asymmetric centres with a plane of symmetry e.g.meso tartaric acid.
  • Meso compound is optically inactive due to internal compensation.
  • Meso compound is a single ompound which cannot be separated into optically active compound by resolution process.
  • Meso compounds should have at least two identical chiral centres.