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

using model chemistry: B3PW91/TZVP

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/TZVP
 hartrees
Energy at 0K-7800.497617
Energy at 298.15K-7800.509319
HF Energy-7800.497617
Nuclear repulsion energy974.637807
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/TZVP
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 3060 2951 2.11      
2 A1 1413 1363 8.03      
3 A1 1064 1026 9.88      
4 A1 411 396 5.29      
5 A1 216 208 0.01      
6 A2 318 306 0.00      
7 E 3148 3036 1.85      
7 E 3148 3036 1.85      
8 E 1470 1418 3.30      
8 E 1470 1418 3.30      
9 E 1088 1049 57.51      
9 E 1088 1049 57.49      
10 E 613 591 98.00      
10 E 613 591 98.04      
11 E 278 268 2.56      
11 E 278 268 2.56      
12 E 148 142 0.00      
12 E 148 142 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9985.6 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 9629.1 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/TZVP
ABC
0.03523 0.03523 0.02088

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.459
C2 0.000 0.000 1.968
Br3 0.000 1.843 -0.205
Br4 1.596 -0.921 -0.205
Br5 -1.596 -0.921 -0.205
H6 0.000 -1.026 2.336
H7 0.889 0.513 2.336
H8 -0.889 0.513 2.336

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50851.95911.95911.95912.13942.13942.1394
C21.50852.84942.84942.84941.09061.09061.0906
Br31.95912.84943.19203.19203.83323.00313.0031
Br41.95912.84943.19203.19203.00313.00313.8332
Br51.95912.84943.19203.19203.00313.83323.0031
H62.13941.09063.83323.00313.00311.77771.7777
H72.13941.09063.00313.00313.83321.77771.7777
H82.13941.09063.00313.83323.00311.77771.7777

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 109.754 C1 C2 H7 109.754
C1 C2 H8 109.754 C2 C1 Br3 109.834
C2 C1 Br4 109.834 C2 C1 Br5 109.834
Br3 C1 Br4 109.106 Br3 C1 Br5 109.106
Br4 C1 Br5 109.106 H6 C2 H7 109.187
H6 C2 H8 109.187 H7 C2 H8 109.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.044      
2 C -0.362      
3 Br -0.024      
4 Br -0.024      
5 Br -0.024      
6 H 0.160      
7 H 0.160      
8 H 0.160      


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 1.730 1.730
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.176 0.000 0.000
y 0.000 -67.176 0.000
z 0.000 0.000 -64.230
Traceless
 xyz
x -1.473 0.000 0.000
y 0.000 -1.473 0.000
z 0.000 0.000 2.946
Polar
3z2-r25.892
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 12.428 0.000 0.000
y 0.000 12.428 0.000
z 0.000 0.000 9.340


<r2> (average value of r2) Å2
<r2> 446.411
(<r2>)1/2 21.128