Chapter 4 book Flashcards
(35 cards)
Constitutional isomers
differ in way atoms are connected to each other
Propane isomers
none
Butane isomers
Isobutane (see page 112)
Saturated hydrocarbons
max # of H per C
Pentane isomers
isopentane and neopentane (see page 112)
Discuss classification of C
see page 112
Discuss classification of H
see page 112
propyl
see page 114
isopropyl
see page 114
butyl
see page 114
sec. butyl
see page 114
isobutyl
see page 114
tert. butyl
see page 114
conformation
different arrangements of atoms
eclipse
C-H is directly aligned with C-H adjacent
staggered
C-H bisect H-C-H adjacent
which conformation is more stable and why
staggered less repulsive forces
dihedral angle
separtates bond on 1 atom from bond on other atom
Why are most alkanes in a zig zag
lowest energy conformation and all large groups are anti
Discuss increase and decrease of angle strain
smaller angle bigger ring strain before pentane and bigger angle after pentane is bigger ring strain
What conformation is a planar cyclohexane
eclipsed
what conformation is a chair cyclohexane
staggered
axial hydrogen
located above or below ring
equatorial hydrogen
on plane of ring
