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

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-7787.929250
Energy at 298.15K-7787.941203
HF Energy-7787.195102
Nuclear repulsion energy982.289388
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/6-31+G**
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 3129 2938 2.42      
2 A1 1458 1369 8.23      
3 A1 1106 1039 3.78      
4 A1 430 404 3.84      
5 A1 229 215 0.03      
6 A2 378 355 0.00      
7 E 3242 3044 1.39      
7 E 3242 3044 1.39      
8 E 1528 1435 4.62      
8 E 1528 1435 4.62      
9 E 1129 1061 40.43      
9 E 1129 1061 40.43      
10 E 667 626 66.70      
10 E 667 626 66.70      
11 E 296 278 1.09      
11 E 296 278 1.09      
12 E 160 151 0.03      
12 E 160 151 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10385.9 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9754.5 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/6-31+G**
ABC
0.03577 0.03577 0.02129

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.464
C2 0.000 0.000 1.975
Br3 0.000 1.825 -0.206
Br4 1.581 -0.913 -0.206
Br5 -1.581 -0.913 -0.206
H6 0.000 -1.027 2.335
H7 0.889 0.513 2.335
H8 -0.889 0.513 2.335

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51151.94411.94411.94412.13412.13412.1341
C21.51152.84402.84402.84401.08771.08771.0877
Br31.94412.84403.16113.16113.81932.99432.9943
Br41.94412.84403.16113.16112.99432.99433.8193
Br51.94412.84403.16113.16112.99433.81932.9943
H62.13411.08773.81932.99432.99431.77821.7782
H72.13411.08772.99432.99433.81931.77821.7782
H82.13411.08772.99433.81932.99431.77821.7782

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 109.294 C1 C2 H7 109.294
C1 C2 H8 109.294 C2 C1 Br3 110.149
C2 C1 Br4 110.149 C2 C1 Br5 110.149
Br3 C1 Br4 108.785 Br3 C1 Br5 108.785
Br4 C1 Br5 108.785 H6 C2 H7 109.648
H6 C2 H8 109.648 H7 C2 H8 109.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability