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

using model chemistry: MP3=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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-7787.864332
Energy at 298.15K-7787.876204
HF Energy-7787.133849
Nuclear repulsion energy977.723459
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 MP3=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 3123 2930 2.03      
2 A1 1480 1389 9.14      
3 A1 1116 1048 3.82      
4 A1 428 401 5.13      
5 A1 228 214 0.08      
6 A2 332 311 0.00      
7 E 3216 3017 1.79      
7 E 3216 3017 1.79      
8 E 1540 1445 4.70      
8 E 1540 1445 4.70      
9 E 1139 1069 42.96      
9 E 1139 1069 42.95      
10 E 669 628 63.83      
10 E 669 628 63.83      
11 E 289 271 1.28      
11 E 289 271 1.28      
12 E 162 152 0.05      
12 E 162 152 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10367.7 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 9728.0 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 MP3=FULL/6-31G*
ABC
0.03544 0.03544 0.02107

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.459
C2 0.000 0.000 1.975
Br3 0.000 1.840 -0.206
Br4 1.593 -0.920 -0.206
Br5 -1.593 -0.920 -0.206
H6 0.000 -1.030 2.338
H7 0.892 0.515 2.338
H8 -0.892 0.515 2.338

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51661.95611.95611.95612.14332.14332.1433
C21.51662.85352.85352.85351.09221.09221.0922
Br31.95612.85353.18663.18663.83523.00393.0039
Br41.95612.85353.18663.18663.00393.00393.8352
Br51.95612.85353.18663.18663.00393.83523.0039
H62.14331.09223.83523.00393.00391.78431.7843
H72.14331.09223.00393.00393.83521.78431.7843
H82.14331.09223.00393.83523.00391.78431.7843

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 109.407 C1 C2 H7 109.407
C1 C2 H8 109.407 C2 C1 Br3 109.862
C2 C1 Br4 109.862 C2 C1 Br5 109.862
Br3 C1 Br4 109.078 Br3 C1 Br5 109.078
Br4 C1 Br5 109.078 H6 C2 H7 109.536
H6 C2 H8 109.536 H7 C2 H8 109.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability