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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-7791.815430
Energy at 298.15K-7791.826987
HF Energy-7791.815430
Nuclear repulsion energy970.983702
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 PBEPBE/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 3001 2960 1.85      
2 A1 1362 1343 10.40      
3 A1 1046 1032 12.09      
4 A1 402 396 6.58      
5 A1 213 210 0.04      
6 A2 295 291 0.00      
7 E 3096 3054 1.91      
7 E 3096 3054 1.91      
8 E 1435 1415 3.22      
8 E 1435 1415 3.22      
9 E 1049 1034 53.79      
9 E 1049 1034 53.78      
10 E 579 572 103.27      
10 E 579 571 103.30      
11 E 268 265 2.82      
11 E 268 265 2.82      
12 E 148 146 0.00      
12 E 148 146 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9734.5 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 9601.2 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 PBEPBE/6-31G**
ABC
0.03496 0.03496 0.02078

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.471
C2 0.000 0.000 1.987
Br3 0.000 1.848 -0.208
Br4 1.600 -0.924 -0.208
Br5 -1.600 -0.924 -0.208
H6 0.000 -1.037 2.356
H7 0.898 0.518 2.356
H8 -0.898 0.518 2.356

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51621.96821.96821.96822.15142.15142.1514
C21.51622.86872.86872.86871.10041.10041.1004
Br31.96822.86873.20013.20013.85883.02403.0240
Br41.96822.86873.20013.20013.02403.02403.8588
Br51.96822.86873.20013.20013.02403.85883.0240
H62.15141.10043.85883.02403.02401.79551.7955
H72.15141.10043.02403.02403.85881.79551.7955
H82.15141.10043.02403.85883.02401.79551.7955

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 109.595 C1 C2 H7 109.595
C1 C2 H8 109.595 C2 C1 Br3 110.161
C2 C1 Br4 110.161 C2 C1 Br5 110.161
Br3 C1 Br4 108.773 Br3 C1 Br5 108.773
Br4 C1 Br5 108.773 H6 C2 H7 109.347
H6 C2 H8 109.347 H7 C2 H8 109.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.110      
2 C -0.331      
3 Br -0.019      
4 Br -0.019      
5 Br -0.019      
6 H 0.166      
7 H 0.166      
8 H 0.166      


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 1.668 1.668
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.336 0.000 0.000
y 0.000 -66.336 0.000
z 0.000 0.000 -63.372
Traceless
 xyz
x -1.482 0.000 0.000
y 0.000 -1.482 0.000
z 0.000 0.000 2.965
Polar
3z2-r25.929
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 11.889 0.000 0.000
y 0.000 11.889 0.000
z 0.000 0.000 9.077


<r2> (average value of r2) Å2
<r2> 448.659
(<r2>)1/2 21.182