Advices For Studying Organic Chemistry

Solomons/SoloCh01
3) Stereoisomers ⇒ differ only in the arrangement of their atoms in space.
4) If one carbon atom of the double bond bears two identical groups ⇒ cis-trans
isomerism is not possible.
H

H

Cl

Cl

Cl Cl

Cl H^

1,1-Dichloroethene 1,1,2-Trichloroethene
(no cis-trans isomerism) (no cis-trans isomerism)

1.14 THE STRUCTURE OF ETHYNE (ACETYLENE):

sp HYBRIDZATION

1. Alkynes
   H CCH
   Ethyne
   (acetylene)
   (C 2 H 2 )

H 3 C CCH

Propyne

(C 2 H 2 )

H CCH

180 o 180 o

2. sp Hybridization: