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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31+G**
 hartrees
Energy at 0K-7792.106067
Energy at 298.15K-7792.117940
HF Energy-7792.106067
Nuclear repulsion energy985.176520
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/6-31+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 3080 2942 2.09      
2 A1 1420 1356 13.20      
3 A1 1092 1044 6.17      
4 A1 428 409 4.85      
5 A1 226 216 0.04      
6 A2 362 345 0.00      
7 E 3180 3038 1.17      
7 E 3180 3038 1.17      
8 E 1486 1420 5.00      
8 E 1486 1420 4.99      
9 E 1099 1050 51.63      
9 E 1099 1050 51.61      
10 E 645 616 86.11      
10 E 645 616 86.09      
11 E 292 279 1.76      
11 E 292 279 1.76      
12 E 157 150 0.02      
12 E 157 150 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10162.5 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9708.3 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/6-31+G**
ABC
0.03599 0.03599 0.02143

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.462
C2 0.000 0.000 1.970
Br3 0.000 1.819 -0.206
Br4 1.575 -0.910 -0.206
Br5 -1.575 -0.910 -0.206
H6 0.000 -1.030 2.336
H7 0.892 0.515 2.336
H8 -0.892 0.515 2.336

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50861.93771.93771.93772.13842.13842.1384
C21.50862.83632.83632.83631.09281.09281.0928
Br31.93772.83633.15083.15083.81792.99262.9926
Br41.93772.83633.15083.15082.99262.99263.8179
Br51.93772.83633.15083.15082.99263.81792.9926
H62.13841.09283.81792.99262.99261.78391.7839
H72.13841.09282.99262.99263.81791.78391.7839
H82.13841.09282.99263.81792.99261.78391.7839

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 109.532 C1 C2 H7 109.532
C1 C2 H8 109.532 C2 C1 Br3 110.151
C2 C1 Br4 110.151 C2 C1 Br5 110.151
Br3 C1 Br4 108.783 Br3 C1 Br5 108.783
Br4 C1 Br5 108.783 H6 C2 H7 109.410
H6 C2 H8 109.410 H7 C2 H8 109.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.404      
2 C -0.359      
3 Br 0.043      
4 Br 0.043      
5 Br 0.043      
6 H 0.211      
7 H 0.211      
8 H 0.211      


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 1.714 1.714
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.654 0.000 0.000
y 0.000 -67.654 0.000
z 0.000 0.000 -64.502
Traceless
 xyz
x -1.576 0.000 0.000
y 0.000 -1.576 0.000
z 0.000 0.000 3.152
Polar
3z2-r26.304
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 12.999 0.000 0.000
y 0.000 12.998 0.000
z 0.000 0.000 10.316


<r2> (average value of r2) Å2
<r2> 437.635
(<r2>)1/2 20.920