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All results from a given calculation for CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-7794.586030
Energy at 298.15K-7794.598077
HF Energy-7794.586030
Nuclear repulsion energy979.249466
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3196 2903 6.31      
2 A1 1545 1404 1.67      
3 A1 1127 1024 2.23      
4 A1 444 404 5.56      
5 A1 236 214 0.03      
6 A2 343 311 0.00      
7 E 3280 2980 5.71      
7 E 3280 2980 5.71      
8 E 1600 1454 2.83      
8 E 1600 1454 2.83      
9 E 1196 1086 58.16      
9 E 1196 1086 58.16      
10 E 714 649 89.20      
10 E 714 649 89.20      
11 E 301 273 1.54      
11 E 301 273 1.54      
12 E 165 150 0.02      
12 E 165 150 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10700.7 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 9721.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/6-311G**
ABC
0.03555 0.03555 0.02111

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.451
C2 0.000 0.000 1.972
Br3 0.000 1.833 -0.205
Br4 1.587 -0.916 -0.205
Br5 -1.587 -0.916 -0.205
H6 0.000 -1.020 2.334
H7 0.883 0.510 2.334
H8 -0.883 0.510 2.334

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52071.94681.94681.94682.14172.14172.1417
C21.52072.84572.84572.84571.08231.08231.0823
Br31.94682.84573.17483.17483.81922.99642.9964
Br41.94682.84573.17483.17482.99642.99643.8192
Br51.94682.84573.17483.17482.99643.81922.9964
H62.14171.08233.81922.99642.99641.76641.7664
H72.14171.08232.99642.99643.81921.76641.7664
H82.14171.08232.99643.81922.99641.76641.7664

picture of 1,1,1-tribromoethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.571 C1 C2 H7 109.571
C1 C2 H8 109.571 C2 C1 Br3 109.690
C2 C1 Br4 109.690 C2 C1 Br5 109.690
Br3 C1 Br4 109.251 Br3 C1 Br5 109.251
Br4 C1 Br5 109.251 H6 C2 H7 109.371
H6 C2 H8 109.371 H7 C2 H8 109.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.411      
2 C -0.144      
3 Br 0.050      
4 Br 0.050      
5 Br 0.050      
6 H 0.135      
7 H 0.135      
8 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.830 1.830
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -68.359 0.000 0.000
y 0.000 -68.359 0.000
z 0.000 0.000 -65.098
Traceless
 xyz
x -1.631 0.000 0.000
y 0.000 -1.631 0.000
z 0.000 0.000 3.261
Polar
3z2-r26.523
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.067 0.000 0.000
y 0.000 11.067 0.000
z 0.000 0.000 8.227


<r2> (average value of r2) Å2
<r2> 443.228
(<r2>)1/2 21.053