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

using model chemistry: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-7787.045665
Energy at 298.15K-7787.057383
HF Energy-7786.711313
Nuclear repulsion energy955.512451
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 CCD/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 3049 2926 5.84      
2 A1 1501 1440 10.24      
3 A1 1101 1057 5.20      
4 A1 397 381 5.66      
5 A1 212 203 0.06      
6 A2 319 306 0.00      
7 E 3136 3009 5.68      
7 E 3136 3009 5.68      
8 E 1534 1472 5.58      
8 E 1534 1472 5.57      
9 E 1156 1109 42.50      
9 E 1156 1109 42.50      
10 E 633 607 55.88      
10 E 633 607 55.88      
11 E 281 269 0.70      
11 E 281 269 0.70      
12 E 147 141 0.11      
12 E 147 141 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 10175.3 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 9763.2 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 CCD/6-31G
ABC
0.03386 0.03386 0.02002

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.469
C2 0.000 0.000 1.992
Br3 0.000 1.882 -0.208
Br4 1.630 -0.941 -0.208
Br5 -1.630 -0.941 -0.208
H6 0.000 -1.034 2.368
H7 0.895 0.517 2.368
H8 -0.895 0.517 2.368

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52312.00042.00042.00042.16162.16162.1616
C21.52312.89582.89582.89581.09961.09961.0996
Br32.00042.89583.26003.26003.89073.04993.0499
Br42.00042.89583.26003.26003.04993.04993.8907
Br52.00042.89583.26003.26003.04993.89073.0499
H62.16161.09963.89073.04993.04991.79011.7901
H72.16161.09963.04993.04993.89071.79011.7901
H82.16161.09963.04993.89073.04991.79011.7901

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 109.964 C1 C2 H7 109.964
C1 C2 H8 109.964 C2 C1 Br3 109.802
C2 C1 Br4 109.802 C2 C1 Br5 109.802
Br3 C1 Br4 109.138 Br3 C1 Br5 109.138
Br4 C1 Br5 109.138 H6 C2 H7 108.974
H6 C2 H8 108.974 H7 C2 H8 108.974
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability