Group+Theory+Problem+Set -...

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Unformatted text preview: Group
Theory
Problem
Set
 1.
 With
organic
structures,
the
bonds
are
continually
rotating
which
leads
to
two
 conformers
of
a
given
structure.
The
conformer
with
the
atoms
farther
apart
is
the
staggered
 conformation.
The
conformer
with
the
atoms
in
an
eclipsed
conformation
has
the
greatest
 energy.
 b Cl Cl Cl Cl Cl Cl Cl a Cl Cl Cl Cl Cl Eclipsed Staggered b a Cl Cl Cl Cl Cl Cl 
 The
circular
form
is
a
Newman
projection.
The
chlorine
atoms
(a)
and
(b)
are
indicated
to
 provide
a
prospective
regarding
how
to
draw
these
structures.
 a. b. c. d. e. Draw
a
Newman
projection
for
the
eclipsed
conformation.
 Illustrate
the
improper
rotation
for
the
eclipsed
conformation.
Specifically
label
the
 rotation
(i.e.
S3,
S4,
etc.)
 Illustrate
the
improper
rotation
for
the
staggered
conformation.
 What
is
the
point
group
for
the
eclipsed
conformation?
 The
eclipsed
conformation
does
not
have
a
center
of
inversion
(S2),
but
the
 staggered
conformation
does.
Illustrate
this.
 
 2.
 A
molecule
has
a
D3h
point
group
is
it
polar?
Explain
your
reasoning.
 3.
 What
is
the
improper
rotation
observed
in
carbon
monoxide?
 4.
 Finish
the
last
problem
on
the
other
problem
set
(problem
6).
The
answer
key
for
NHF2
 is
incorrect
(the
answer
should
be
Cs).
 
 
 ...
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This note was uploaded on 09/12/2011 for the course CHEM 1311 taught by Professor Soper during the Spring '08 term at Georgia Institute of Technology.

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