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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-7791.626396
Energy at 298.15K-7791.638160
HF Energy-7791.626396
Nuclear repulsion energy968.188302
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 PBE1PBE/6-31G
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 3093 2957 1.77      
2 A1 1480 1415 21.18      
3 A1 1122 1072 13.58      
4 A1 411 393 9.23      
5 A1 220 210 0.11      
6 A2 325 311 0.00      
7 E 3195 3054 1.57      
7 E 3195 3054 1.57      
8 E 1520 1453 6.95      
8 E 1520 1453 6.95      
9 E 1140 1090 68.14      
9 E 1140 1090 68.13      
10 E 628 600 106.63      
10 E 628 600 106.61      
11 E 286 273 1.61      
11 E 286 273 1.61      
12 E 150 143 0.11      
12 E 150 143 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 10243.8 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 9792.0 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 PBE1PBE/6-31G
ABC
0.03477 0.03477 0.02058

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.468
C2 0.000 0.000 1.970
Br3 0.000 1.856 -0.206
Br4 1.608 -0.928 -0.206
Br5 -1.608 -0.928 -0.206
H6 0.000 -1.027 2.344
H7 0.890 0.514 2.344
H8 -0.890 0.514 2.344

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50231.97501.97501.97502.13882.13882.1388
C21.50232.86062.86062.86061.09311.09311.0931
Br31.97502.86063.21543.21543.84953.01623.0162
Br41.97502.86063.21543.21543.01623.01623.8495
Br51.97502.86063.21543.21543.01623.84953.0162
H62.13881.09313.84953.01623.01621.77931.7793
H72.13881.09313.01623.01623.84951.77931.7793
H82.13881.09313.01623.84953.01621.77931.7793

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 109.988 C1 C2 H7 109.988
C1 C2 H8 109.988 C2 C1 Br3 109.957
C2 C1 Br4 109.957 C2 C1 Br5 109.957
Br3 C1 Br4 108.981 Br3 C1 Br5 108.981
Br4 C1 Br5 108.981 H6 C2 H7 108.949
H6 C2 H8 108.949 H7 C2 H8 108.949
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.780      
2 C -0.401      
3 Br 0.172      
4 Br 0.172      
5 Br 0.172      
6 H 0.221      
7 H 0.221      
8 H 0.221      


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 1.982 1.982
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.891 0.000 0.000
y 0.000 -67.891 0.000
z 0.000 0.000 -64.045
Traceless
 xyz
x -1.923 0.000 0.000
y 0.000 -1.923 0.000
z 0.000 0.000 3.846
Polar
3z2-r27.692
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 9.895 0.000 0.000
y 0.000 9.895 0.000
z 0.000 0.000 6.367


<r2> (average value of r2) Å2
<r2> 452.166
(<r2>)1/2 21.264