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

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-7795.268513
Energy at 298.15K-7795.280400
HF Energy-7794.585789
Nuclear repulsion energy976.718938
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 MP2/6-311G**
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 3088 2935 2.49      
2 A1 1431 1360 6.13      
3 A1 1090 1036 5.30      
4 A1 425 403 4.09      
5 A1 224 213 0.02      
6 A2 350 333 0.00      
7 E 3193 3034 2.54      
7 E 3193 3034 2.54      
8 E 1491 1417 3.09      
8 E 1491 1417 3.09      
9 E 1111 1055 45.63      
9 E 1111 1055 45.63      
10 E 666 633 70.60      
10 E 666 633 70.60      
11 E 289 275 1.14      
11 E 289 275 1.14      
12 E 156 148 0.00      
12 E 156 148 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10209.5 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9701.1 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 MP2/6-311G**
ABC
0.03538 0.03538 0.02096

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.445
C2 0.000 0.000 1.964
Br3 0.000 1.840 -0.204
Br4 1.593 -0.920 -0.204
Br5 -1.593 -0.920 -0.204
H6 0.000 -1.030 2.328
H7 0.892 0.515 2.328
H8 -0.892 0.515 2.328

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51861.95091.95091.95092.14582.14582.1458
C21.51862.84332.84332.84331.09211.09211.0921
Br31.95092.84333.18633.18633.82672.99362.9936
Br41.95092.84333.18633.18632.99362.99363.8267
Br51.95092.84333.18633.18632.99363.82672.9936
H62.14581.09213.82672.99362.99361.78331.7833
H72.14581.09212.99362.99363.82671.78331.7833
H82.14581.09212.99363.82672.99361.78331.7833

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 109.474 C1 C2 H7 109.474
C1 C2 H8 109.474 C2 C1 Br3 109.444
C2 C1 Br4 109.444 C2 C1 Br5 109.444
Br3 C1 Br4 109.498 Br3 C1 Br5 109.498
Br4 C1 Br5 109.498 H6 C2 H7 109.468
H6 C2 H8 109.468 H7 C2 H8 109.468
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability