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

using model chemistry: PBE1PBE/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-7799.654770
Energy at 298.15K-7799.666517
HF Energy-7799.654770
Nuclear repulsion energy981.683984
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/cc-pVTZ
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 3063 2944 1.81      
2 A1 1403 1348 9.70      
3 A1 1075 1034 7.70      
4 A1 419 403 4.42      
5 A1 220 211 0.03      
6 A2 308 296 0.00      
7 E 3154 3031 1.89      
7 E 3154 3031 1.89      
8 E 1467 1410 3.48      
8 E 1467 1410 3.48      
9 E 1086 1043 51.39      
9 E 1086 1043 51.37      
10 E 638 613 82.13      
10 E 638 613 82.09      
11 E 278 268 1.95      
11 E 278 268 1.95      
12 E 150 144 0.01      
12 E 150 144 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10016.0 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 9625.4 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/cc-pVTZ
ABC
0.03574 0.03574 0.02122

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.456
C2 0.000 0.000 1.963
Br3 0.000 1.828 -0.205
Br4 1.583 -0.914 -0.205
Br5 -1.583 -0.914 -0.205
H6 0.000 -1.027 2.328
H7 0.890 0.514 2.328
H8 -0.890 0.514 2.328

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50751.94381.94381.94382.13562.13562.1356
C21.50752.83582.83582.83581.09001.09001.0900
Br31.94382.83583.16663.16663.81672.98892.9889
Br41.94382.83583.16663.16662.98892.98893.8167
Br51.94382.83583.16663.16662.98893.81672.9889
H62.13561.09003.81672.98892.98891.77911.7791
H72.13561.09002.98892.98893.81671.77911.7791
H82.13561.09002.98893.81672.98891.77911.7791

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 109.555 C1 C2 H7 109.555
C1 C2 H8 109.555 C2 C1 Br3 109.856
C2 C1 Br4 109.856 C2 C1 Br5 109.856
Br3 C1 Br4 109.084 Br3 C1 Br5 109.084
Br4 C1 Br5 109.084 H6 C2 H7 109.388
H6 C2 H8 109.388 H7 C2 H8 109.388
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.125      
2 C -0.253      
3 Br -0.009      
4 Br -0.009      
5 Br -0.009      
6 H 0.135      
7 H 0.135      
8 H 0.135      


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 1.678 1.678
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.322 0.000 0.000
y 0.000 -67.322 0.000
z 0.000 0.000 -64.227
Traceless
 xyz
x -1.547 0.000 0.000
y 0.000 -1.547 0.000
z 0.000 0.000 3.095
Polar
3z2-r26.189
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 12.725 0.000 0.000
y 0.000 12.726 0.000
z 0.000 0.000 10.073


<r2> (average value of r2) Å2
<r2> 440.543
(<r2>)1/2 20.989