Enantiomers, Diastereomers and Meso Compounds | How to Identify such molecules | скачать в хорошем качестве

Enantiomers, Diastereomers and Meso Compounds | How to Identify such molecules |

1. Enantiomers Enantiomers are a type of stereoisomers that are non-superimposable mirror images of each other. Key Characteristics They have the same molecular formula and connectivity of atoms. They are mirror images like left and right hands. They cannot be superimposed on each other. They usually contain at least one chiral (asymmetric) carbon atom. They rotate plane-polarized light in opposite directions: One is dextrorotatory (+) The other is levorotatory (–) Example Lactic acid has one chiral carbon and exists as two enantiomers: (R)-lactic acid (S)-lactic acid Properties Same physical properties (melting point, boiling point, density) Same chemical properties in achiral environments Different behavior with chiral reagents or enzymes 2. Diastereomers Diastereomers are stereoisomers that are not mirror images of each other. Key Characteristics Same molecular formula and connectivity. Not mirror images. Occur when molecules have two or more chiral centers. Configuration differs at one or more (but not all) chiral centers. Example 2,3-Dichlorobutane has multiple stereoisomers: (2R,3R) (2S,3S) (2R,3S) Here: (2R,3R) and (2S,3S) → Enantiomers (2R,3R) and (2R,3S) → Diastereomers Properties Diastereomers have different: Physical properties Melting points Boiling points Chemical reactivity This makes them easier to separate than enantiomers. 3. Meso Compounds A meso compound is a molecule that contains two or more chiral centers but is overall optically inactive due to an internal plane of symmetry. Key Characteristics Contains multiple stereocenters. Has a plane of symmetry. Superimposable on its mirror image. Optically inactive (no rotation of plane-polarized light). Example Tartaric acid: (R,R) and (S,S) → Enantiomers Meso-tartaric acid (R,S) → Meso compound Important Point Although meso compounds have chiral centers, internal symmetry cancels optical activity.    • Assignment of R and S configuration to mol...   #enantiomers #diastereomers #mesocompounds #mirrorimages #superimposibility #RandSconfiguration #opticalisomers #opticallyactive #chirality .#chemclasses #shorts, #youtubeshorts, #shortvideos,#shortsfeed, #trending Organic Chemistry, Inorganic Chemistry, Physicsl Chmeistry, NEET, JEE, Class-12th, class 11th, CBSE, NCERT, PMT, CSIR-NET, JRF, MSc, BSc, Competetive exams,