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

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-7793.116395
Energy at 298.15K-7793.128220
HF Energy-7793.116395
Nuclear repulsion energy981.447387
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 B3PW91/6-31+G**
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 3069 2946 2.65      
2 A1 1417 1360 11.66      
3 A1 1077 1034 7.05      
4 A1 422 405 5.04      
5 A1 222 214 0.03      
6 A2 360 345 0.00      
7 E 3166 3039 1.58      
7 E 3166 3039 1.58      
8 E 1486 1426 4.70      
8 E 1486 1426 4.70      
9 E 1095 1051 51.80      
9 E 1095 1051 51.79      
10 E 628 603 91.76      
10 E 628 603 91.78      
11 E 289 277 2.05      
11 E 289 277 2.05      
12 E 155 149 0.01      
12 E 155 149 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10101.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9698.1 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 B3PW91/6-31+G**
ABC
0.03572 0.03572 0.02126

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.465
C2 0.000 0.000 1.977
Br3 0.000 1.826 -0.206
Br4 1.582 -0.913 -0.206
Br5 -1.582 -0.913 -0.206
H6 0.000 -1.030 2.342
H7 0.892 0.515 2.342
H8 -0.892 0.515 2.342

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51121.94591.94591.94592.14102.14102.1410
C21.51122.84622.84622.84621.09291.09291.0929
Br31.94592.84623.16323.16323.82803.00183.0018
Br41.94592.84623.16323.16323.00183.00183.8280
Br51.94592.84623.16323.16323.00183.82803.0018
H62.14101.09293.82803.00183.00181.78391.7839
H72.14101.09293.00183.00183.82801.78391.7839
H82.14101.09293.00183.82803.00181.78391.7839

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 109.550 C1 C2 H7 109.550
C1 C2 H8 109.550 C2 C1 Br3 110.194
C2 C1 Br4 110.194 C2 C1 Br5 110.194
Br3 C1 Br4 108.739 Br3 C1 Br5 108.739
Br4 C1 Br5 108.739 H6 C2 H7 109.392
H6 C2 H8 109.392 H7 C2 H8 109.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351      
2 C -0.353      
3 Br 0.030      
4 Br 0.030      
5 Br 0.030      
6 H 0.205      
7 H 0.205      
8 H 0.205      


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 1.732 1.732
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.527 0.000 0.000
y 0.000 -67.527 0.000
z 0.000 0.000 -64.285
Traceless
 xyz
x -1.621 0.000 0.000
y 0.000 -1.621 0.000
z 0.000 0.000 3.242
Polar
3z2-r26.483
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 13.093 0.000 0.000
y 0.000 13.094 -0.000
z 0.000 -0.000 10.342


<r2> (average value of r2) Å2
<r2> 440.564
(<r2>)1/2 20.990