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

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at G3
 hartrees
Energy at 0K-7798.623587
Energy at 298.15K-7798.615934
HF Energy-7793.773555
Nuclear repulsion energy978.715958
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 HF/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 3239 3052 6.90      
2 A1 1571 1480 2.32      
3 A1 1141 1075 1.76      
4 A1 446 420 5.97      
5 A1 239 225 0.07      
6 A2 337 317 0.00      
7 E 3325 3133 4.99      
7 E 3325 3133 4.99      
8 E 1628 1534 2.77      
8 E 1628 1534 2.77      
9 E 1207 1137 49.73      
9 E 1207 1137 49.73      
10 E 713 672 83.69      
10 E 713 672 83.69      
11 E 300 283 1.35      
11 E 300 283 1.35      
12 E 170 160 0.04      
12 E 170 160 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10828.7 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 10202.8 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 MP2=FULL/6-31G*
ABC
0.03553 0.03553 0.02112

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 1.977
Br3 0.000 1.832 -0.206
Br4 1.587 -0.916 -0.206
Br5 -1.587 -0.916 -0.206
H6 0.000 -1.030 2.340
H7 0.892 0.515 2.340
H8 -0.892 0.515 2.340

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51261.95101.95101.95102.13982.13982.1398
C21.51262.84992.84992.84991.09201.09201.0920
Br31.95102.84993.17353.17353.83063.00203.0020
Br41.95102.84993.17353.17353.00203.00203.8306
Br51.95102.84993.17353.17353.00203.83063.0020
H62.13981.09203.83063.00203.00201.78391.7839
H72.13981.09203.00203.00203.83061.78391.7839
H82.13981.09203.00203.83063.00201.78391.7839

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 109.681 C1 C2 H7 109.681
C1 C2 H8 109.681 C2 C1 Br3 109.539
C2 C1 Br4 109.539 C2 C1 Br5 109.539
Br3 C1 Br4 109.403 Br3 C1 Br5 109.403
Br4 C1 Br5 109.403 H6 C2 H7 109.260
H6 C2 H8 109.260 H7 C2 H8 109.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability