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

using model chemistry: CCD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-7758.468038
Energy at 298.15K-7758.479852
HF Energy-7757.846949
Nuclear repulsion energy973.620987
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/3-21G*
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 2930 2.21      
2 A1 1490 1425 11.11      
3 A1 1037 991 3.03      
4 A1 422 403 4.63      
5 A1 219 209 0.15      
6 A2 318 304 0.00      
7 E 3145 3008 2.66      
7 E 3145 3008 2.66      
8 E 1561 1493 4.72      
8 E 1561 1493 4.72      
9 E 1165 1114 40.28      
9 E 1165 1114 40.29      
10 E 690 660 52.45      
10 E 690 660 52.45      
11 E 280 267 0.70      
11 E 280 267 0.70      
12 E 152 145 0.10      
12 E 152 145 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 10265.8 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 9819.2 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/3-21G*
ABC
0.03514 0.03514 0.02092

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.461
C2 0.000 0.000 1.998
Br3 0.000 1.841 -0.208
Br4 1.594 -0.921 -0.208
Br5 -1.594 -0.921 -0.208
H6 0.000 -1.035 2.358
H7 0.897 0.518 2.358
H8 -0.897 0.518 2.358

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.53731.95891.95891.95892.16122.16122.1612
C21.53732.87362.87362.87361.09621.09621.0962
Br31.95892.87363.18883.18883.85473.02323.0232
Br41.95892.87363.18883.18883.02323.02323.8547
Br51.95892.87363.18883.18883.02323.85473.0232
H62.16121.09623.85473.02323.02321.79351.7935
H72.16121.09623.02323.02323.85471.79351.7935
H82.16121.09623.02323.85473.02321.79351.7935

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 109.156 C1 C2 H7 109.156
C1 C2 H8 109.156 C2 C1 Br3 109.973
C2 C1 Br4 109.973 C2 C1 Br5 109.973
Br3 C1 Br4 108.964 Br3 C1 Br5 108.964
Br4 C1 Br5 108.964 H6 C2 H7 109.784
H6 C2 H8 109.784 H7 C2 H8 109.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability