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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-7793.056142
Energy at 298.15K-7793.067855
HF Energy-7793.056142
Nuclear repulsion energy977.975741
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 B3PW91/6-31G*
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 3080 2946 2.52      
2 A1 1433 1371 9.93      
3 A1 1080 1033 8.31      
4 A1 416 398 6.07      
5 A1 221 212 0.05      
6 A2 313 300 0.00      
7 E 3172 3034 2.20      
7 E 3172 3034 2.20      
8 E 1500 1436 3.91      
8 E 1500 1436 3.91      
9 E 1098 1051 52.33      
9 E 1098 1051 52.31      
10 E 620 593 93.20      
10 E 620 593 93.24      
11 E 279 267 2.21      
11 E 279 267 2.21      
12 E 155 148 0.01      
12 E 155 148 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10096.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9659.1 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 B3PW91/6-31G*
ABC
0.03547 0.03547 0.02109

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

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 1.834 -0.207
Br4 1.588 -0.917 -0.207
Br5 -1.588 -0.917 -0.207
H6 0.000 -1.030 2.346
H7 0.892 0.515 2.346
H8 -0.892 0.515 2.346

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51241.95281.95281.95282.14452.14452.1445
C21.51242.85152.85152.85151.09371.09371.0937
Br31.95282.85153.17623.17623.83583.00823.0082
Br41.95282.85153.17623.17623.00823.00823.8358
Br51.95282.85153.17623.17623.00823.83583.0082
H62.14451.09373.83583.00823.00821.78341.7834
H72.14451.09373.00823.00823.83581.78341.7834
H82.14451.09373.00823.83583.00821.78341.7834

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 109.703 C1 C2 H7 109.703
C1 C2 H8 109.703 C2 C1 Br3 110.102
C2 C1 Br4 110.102 C2 C1 Br5 110.102
Br3 C1 Br4 108.833 Br3 C1 Br5 108.833
Br4 C1 Br5 108.833 H6 C2 H7 109.238
H6 C2 H8 109.238 H7 C2 H8 109.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 C -0.490      
3 Br -0.019      
4 Br -0.019      
5 Br -0.019      
6 H 0.216      
7 H 0.216      
8 H 0.216      


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 1.682 1.682
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.304 0.000 0.000
y 0.000 -66.304 0.000
z 0.000 0.000 -63.359
Traceless
 xyz
x -1.473 0.000 0.000
y 0.000 -1.473 0.000
z 0.000 0.000 2.945
Polar
3z2-r25.890
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 11.497 0.000 0.000
y 0.000 11.497 0.000
z 0.000 0.000 8.756


<r2> (average value of r2) Å2
<r2> 442.812
(<r2>)1/2 21.043