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Concepts and Misconcepts in Stereochemistry

AMIT BASAK

Indian Institute of Technology Kharagpur India

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Stereochemistry

Chiral Centre Stereo Centre

Chirality Centre Chiral Molecule

Meso Compound Stereogenic Centre

Symmetry elements Chirotopic CentreAsymmetric Disymmetric

Conformation Configuration

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Conformation and Configuration

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The terms homochiral and heterochiral refer to

relations between chiral objects or models of chiral

molecules: homochiral objects are only properly

congruent, whereas heterochiral (enantiomorphous

objects are only improperly congruent!

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"omochiral: Molecules or objects with same chirality

"eterochirality: Molecules or objects with opposite chirality

COOH

COOH

H OH

H OH

R

S

Plane of symmetry

Achiral Meso

COOH

COOH

H OH

HO H

R

R

Chiral

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