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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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