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

using model chemistry: MP2=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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-7787.864926
Energy at 298.15K-7787.876769
HF Energy-7787.138978
Nuclear repulsion energy979.126638
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3141 2935 1.94      
2 A1 1454 1358 6.46      
3 A1 1109 1036 4.86      
4 A1 422 395 4.86      
5 A1 227 212 0.07      
6 A2 327 305 0.00      
7 E 3255 3041 1.58      
7 E 3255 3041 1.58      
8 E 1533 1433 3.59      
8 E 1533 1433 3.59      
9 E 1122 1048 42.06      
9 E 1122 1048 42.05      
10 E 659 616 67.32      
10 E 659 616 67.32      
11 E 284 266 1.14      
11 E 284 266 1.14      
12 E 161 150 0.03      
12 E 161 150 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10353.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 9674.4 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/6-31G**
ABC
0.03555 0.03555 0.02112

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.461
C2 0.000 0.000 1.973
Br3 0.000 1.833 -0.206
Br4 1.587 -0.916 -0.206
Br5 -1.587 -0.916 -0.206
H6 0.000 -1.026 2.332
H7 0.888 0.513 2.332
H8 -0.888 0.513 2.332

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51161.95011.95011.95012.13372.13372.1337
C21.51162.84682.84682.84681.08681.08681.0868
Br31.95012.84683.17403.17403.82232.99522.9952
Br41.95012.84683.17403.17402.99522.99523.8223
Br51.95012.84683.17403.17402.99523.82232.9952
H62.13371.08683.82232.99522.99521.77651.7765
H72.13371.08682.99522.99523.82231.77651.7765
H82.13371.08682.99523.82232.99521.77651.7765

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 109.309 C1 C2 H7 109.309
C1 C2 H8 109.309 C2 C1 Br3 109.998
C2 C1 Br4 109.998 C2 C1 Br5 109.998
Br3 C1 Br4 108.939 Br3 C1 Br5 108.939
Br4 C1 Br5 108.939 H6 C2 H7 109.633
H6 C2 H8 109.633 H7 C2 H8 109.633
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability