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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-7787.776262
Energy at 298.15K-7787.788110
HF Energy-7787.133674
Nuclear repulsion energy975.022688
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 MP3/6-31G*
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 3125 2933 2.00      
2 A1 1478 1387 8.79      
3 A1 1114 1045 3.98      
4 A1 426 400 5.28      
5 A1 227 213 0.07      
6 A2 326 306 0.00      
7 E 3218 3021 1.75      
7 E 3218 3021 1.75      
8 E 1539 1445 4.65      
8 E 1539 1445 4.65      
9 E 1137 1067 43.59      
9 E 1137 1067 43.59      
10 E 663 622 65.21      
10 E 663 622 65.21      
11 E 288 270 1.35      
11 E 288 270 1.35      
12 E 161 151 0.04      
12 E 161 151 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10353.5 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 9717.8 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 MP3/6-31G*
ABC
0.03525 0.03525 0.02095

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.464
C2 0.000 0.000 1.981
Br3 0.000 1.840 -0.207
Br4 1.594 -0.920 -0.207
Br5 -1.594 -0.920 -0.207
H6 0.000 -1.030 2.344
H7 0.892 0.515 2.344
H8 -0.892 0.515 2.344

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51721.95851.95851.95852.14392.14392.1439
C21.51722.85892.85892.85891.09211.09211.0921
Br31.95852.85893.18713.18713.84003.01003.0100
Br41.95852.85893.18713.18713.01003.01003.8400
Br51.95852.85893.18713.18713.01003.84003.0100
H62.14391.09213.84003.01003.01001.78391.7839
H72.14391.09213.01003.01003.84001.78391.7839
H82.14391.09213.01003.84003.01001.78391.7839

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 109.422 C1 C2 H7 109.422
C1 C2 H8 109.422 C2 C1 Br3 110.030
C2 C1 Br4 110.031 C2 C1 Br5 110.031
Br3 C1 Br4 108.906 Br3 C1 Br5 108.906
Br4 C1 Br5 108.906 H6 C2 H7 109.520
H6 C2 H8 109.520 H7 C2 H8 109.520
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability