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

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-7791.811442
Energy at 298.15K-7791.823012
HF Energy-7791.811442
Nuclear repulsion energy971.001616
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 PBEPBEultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3004 2955 2.06      
2 A1 1383 1360 10.42      
3 A1 1049 1031 11.76      
4 A1 405 398 6.49      
5 A1 213 210 0.04      
6 A2 302 297 0.00      
7 E 3094 3043 2.27      
7 E 3094 3043 2.27      
8 E 1454 1430 3.53      
8 E 1454 1430 3.53      
9 E 1061 1044 53.28      
9 E 1061 1044 53.28      
10 E 583 574 104.24      
10 E 583 574 104.24      
11 E 271 266 2.68      
11 E 271 266 2.68      
12 E 149 146 0.00      
12 E 149 146 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9789.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 9627.7 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 PBEPBEultrafine/6-31G*
ABC
0.03497 0.03497 0.02078

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.470
C2 0.000 0.000 1.987
Br3 0.000 1.847 -0.208
Br4 1.600 -0.924 -0.208
Br5 -1.600 -0.924 -0.208
H6 0.000 -1.037 2.358
H7 0.898 0.519 2.358
H8 -0.898 0.519 2.358

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51721.96791.96791.96792.15432.15432.1543
C21.51722.86902.86902.86901.10171.10171.1017
Br31.96792.86903.19983.19983.86083.02603.0260
Br41.96792.86903.19983.19983.02603.02603.8608
Br51.96792.86903.19983.19983.02603.86083.0260
H62.15431.10173.86083.02603.02601.79671.7967
H72.15431.10173.02603.02603.86081.79671.7967
H82.15431.10173.02603.86083.02601.79671.7967

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 109.673 C1 C2 H7 109.673
C1 C2 H8 109.673 C2 C1 Br3 110.152
C2 C1 Br4 110.152 C2 C1 Br5 110.152
Br3 C1 Br4 108.782 Br3 C1 Br5 108.782
Br4 C1 Br5 108.782 H6 C2 H7 109.269
H6 C2 H8 109.269 H7 C2 H8 109.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 C -0.465      
3 Br -0.018      
4 Br -0.018      
5 Br -0.018      
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 1.656 1.656
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.330 0.000 0.000
y 0.000 -66.330 0.000
z 0.000 0.000 -63.423
Traceless
 xyz
x -1.454 0.000 0.000
y 0.000 -1.454 0.000
z 0.000 0.000 2.907
Polar
3z2-r25.814
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 11.864 0.000 0.000
y 0.000 11.864 0.000
z 0.000 0.000 9.028


<r2> (average value of r2) Å2
<r2> 448.645
(<r2>)1/2 21.181