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

using model chemistry: MP2=FULL/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-7796.144685
Energy at 298.15K-7796.156552
HF Energy-7794.875394
Nuclear repulsion energy992.848910
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/aug-cc-pVTZ
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 3090 2940 1.82      
2 A1 1404 1336 9.79      
3 A1 1114 1060 3.34      
4 A1 430 409 2.85      
5 A1 228 217 0.03      
6 A2 306 292 0.00      
7 E 3178 3023 1.32      
7 E 3178 3023 1.32      
8 E 1487 1415 3.74      
8 E 1487 1415 3.74      
9 E 1102 1048 39.74      
9 E 1102 1048 39.74      
10 E 688 654 56.16      
10 E 688 654 56.16      
11 E 285 271 0.81      
11 E 285 271 0.81      
12 E 157 149 0.03      
12 E 157 149 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10182.8 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 9687.9 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/aug-cc-pVTZ
ABC
0.03656 0.03656 0.02169

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.442
C2 0.000 0.000 1.940
Br3 0.000 1.808 -0.202
Br4 1.566 -0.904 -0.202
Br5 -1.566 -0.904 -0.202
H6 0.000 -1.025 2.298
H7 0.888 0.513 2.298
H8 -0.888 0.513 2.298

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.49741.91941.91941.91942.12032.12032.1203
C21.49742.80282.80282.80281.08621.08621.0862
Br31.91942.80283.13163.13163.77872.95252.9525
Br41.91942.80283.13163.13162.95252.95253.7787
Br51.91942.80283.13163.13162.95253.77872.9525
H62.12031.08623.77872.95252.95251.77591.7759
H72.12031.08622.95252.95253.77871.77591.7759
H82.12031.08622.95253.77872.95251.77591.7759

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 109.271 C1 C2 H7 109.271
C1 C2 H8 109.271 C2 C1 Br3 109.612
C2 C1 Br4 109.612 C2 C1 Br5 109.612
Br3 C1 Br4 109.330 Br3 C1 Br5 109.330
Br4 C1 Br5 109.330 H6 C2 H7 109.671
H6 C2 H8 109.671 H7 C2 H8 109.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability