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

using model chemistry: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-7795.339455
Energy at 298.15K-7795.351248
HF Energy-7794.585289
Nuclear repulsion energy970.387117
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 MP4/6-311G**
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 3058 2965        
2 A1 1426 1383        
3 A1 1075 1042        
4 A1 413 400        
5 A1 218 211        
6 A2 336 326        
7 E 3154 3059        
7 E 3154 3059        
8 E 1484 1439        
8 E 1483 1438        
9 E 1102 1069        
9 E 1102 1068        
10 E 641 621        
10 E 641 621        
11 E 284 276        
11 E 283 274        
12 E 152 147        
12 E 152 147        

Unscaled Zero Point Vibrational Energy (zpe) 10077.7 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 9772.3 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 MP4/6-311G**
ABC
0.03492 0.03492 0.02067

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.449
C2 0.000 0.000 1.973
Br3 0.000 1.852 -0.205
Br4 1.604 -0.926 -0.205
Br5 -1.604 -0.926 -0.205
H6 0.000 -1.033 2.338
H7 0.894 0.516 2.338
H8 -0.894 0.516 2.338

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52481.96421.96421.96422.15302.15302.1530
C21.52482.85952.85952.85951.09501.09501.0950
Br31.96422.85953.20813.20813.84573.00863.0086
Br41.96422.85953.20813.20813.00863.00863.8457
Br51.96422.85953.20813.20813.00863.84573.0086
H62.15301.09503.84573.00863.00861.78841.7884
H72.15301.09503.00863.00863.84571.78841.7884
H82.15301.09503.00863.84573.00861.78841.7884

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 109.445 C1 C2 H7 109.445
C1 C2 H8 109.445 C2 C1 Br3 109.442
C2 C1 Br4 109.442 C2 C1 Br5 109.442
Br3 C1 Br4 109.501 Br3 C1 Br5 109.501
Br4 C1 Br5 109.501 H6 C2 H7 109.498
H6 C2 H8 109.498 H7 C2 H8 109.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability