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

using model chemistry: MP2=FULL/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=FULL/6-311G*
 hartrees
Energy at 0K-7796.468045
Energy at 298.15K-7796.479942
HF Energy-7794.581447
Nuclear repulsion energy978.685472
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=FULL/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 3096 2932 2.22      
2 A1 1453 1376 12.02      
3 A1 1097 1039 4.99      
4 A1 426 404 4.33      
5 A1 225 213 0.02      
6 A2 356 338 0.00      
7 E 3200 3031 2.10      
7 E 3200 3031 2.10      
8 E 1513 1433 4.59      
8 E 1513 1433 4.59      
9 E 1126 1067 49.11      
9 E 1126 1067 49.11      
10 E 668 633 72.38      
10 E 668 633 72.37      
11 E 291 276 1.34      
11 E 291 276 1.34      
12 E 157 149 0.01      
12 E 157 149 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10282.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 9738.1 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=FULL/6-311G*
ABC
0.03552 0.03552 0.02105

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.446
C2 0.000 0.000 1.962
Br3 0.000 1.835 -0.204
Br4 1.590 -0.918 -0.204
Br5 -1.590 -0.918 -0.204
H6 0.000 -1.028 2.327
H7 0.890 0.514 2.327
H8 -0.890 0.514 2.327

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51531.94731.94731.94732.14332.14332.1433
C21.51532.83902.83902.83901.09081.09081.0908
Br31.94732.83903.17913.17913.82182.99112.9911
Br41.94732.83903.17913.17912.99112.99113.8218
Br51.94732.83903.17913.17912.99113.82182.9911
H62.14331.09083.82182.99112.99111.78011.7801
H72.14331.09082.99112.99113.82181.78011.7801
H82.14331.09082.99113.82182.99111.78011.7801

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 109.579 C1 C2 H7 109.579
C1 C2 H8 109.579 C2 C1 Br3 109.517
C2 C1 Br4 109.517 C2 C1 Br5 109.517
Br3 C1 Br4 109.425 Br3 C1 Br5 109.425
Br4 C1 Br5 109.425 H6 C2 H7 109.363
H6 C2 H8 109.363 H7 C2 H8 109.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability