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

using model chemistry: MP4=FULL/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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-7787.901963
Energy at 298.15K-7787.913726
HF Energy-7787.133283
Nuclear repulsion energy973.009114
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 MP4=FULL/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 3075 2957        
2 A1 1451 1396        
3 A1 1093 1051        
4 A1 414 398        
5 A1 221 213        
6 A2 322 309        
7 E 3172 3051        
7 E 3172 3051        
8 E 1521 1462        
8 E 1520 1462        
9 E 1116 1073        
9 E 1116 1073        
10 E 637 613        
10 E 637 613        
11 E 282 272        
11 E 282 271        
12 E 157 151        
12 E 157 151        

Unscaled Zero Point Vibrational Energy (zpe) 10173.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 9783.0 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 MP4=FULL/6-31G*
ABC
0.03511 0.03511 0.02087

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/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 1.986
Br3 0.000 1.844 -0.207
Br4 1.597 -0.922 -0.207
Br5 -1.597 -0.922 -0.207
H6 0.000 -1.033 2.351
H7 0.895 0.517 2.351
H8 -0.895 0.517 2.351

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51761.96361.96361.96362.14722.14722.1472
C21.51762.86542.86542.86541.09571.09571.0957
Br31.96362.86543.19303.19303.84983.01773.0177
Br41.96362.86543.19303.19303.01773.01773.8498
Br51.96362.86543.19303.19303.01773.84983.0177
H62.14721.09573.84983.01773.01771.78961.7896
H72.14721.09573.01773.01773.84981.78961.7896
H82.14721.09573.01773.84983.01771.78961.7896

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 109.442 C1 C2 H7 109.442
C1 C2 H8 109.442 C2 C1 Br3 110.139
C2 C1 Br4 110.139 C2 C1 Br5 110.139
Br3 C1 Br4 108.795 Br3 C1 Br5 108.795
Br4 C1 Br5 108.795 H6 C2 H7 109.500
H6 C2 H8 109.500 H7 C2 H8 109.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability