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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-7796.491735
Energy at 298.15K-7796.484220
HF Energy-7787.389264
Nuclear repulsion energy985.076882
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 CBS-Q
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 3219 3219 7.77      
2 A1 1556 1556 2.26      
3 A1 1137 1137 2.40      
4 A1 452 452 6.30      
5 A1 241 241 0.09      
6 A2 343 343 0.00      
7 E 3310 3310 5.65      
7 E 3310 3310 5.65      
8 E 1619 1619 2.61      
8 E 1619 1619 2.61      
9 E 1201 1201 52.69      
9 E 1201 1201 52.69      
10 E 733 733 85.08      
10 E 733 733 85.08      
11 E 302 302 1.16      
11 E 302 302 1.16      
12 E 168 168 0.06      
12 E 168 168 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 10807.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10807.3 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 CBS-Q
ABC
0.03590 0.03590 0.02135

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.449
C2 0.000 0.000 1.971
Br3 0.000 1.816 -0.205
Br4 1.573 -0.908 -0.205
Br5 -1.573 -0.908 -0.205
H6 0.000 -1.022 2.336
H7 0.885 0.511 2.336
H8 -0.885 0.511 2.336

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52231.93011.93011.93012.14552.14552.1455
C21.52232.83452.83452.83451.08491.08491.0849
Br31.93012.83453.14523.14523.80902.99022.9902
Br41.93012.83453.14523.14522.99022.99023.8090
Br51.93012.83453.14523.14522.99023.80902.9902
H62.14551.08493.80902.99022.99021.77001.7700
H72.14551.08492.99022.99023.80901.77001.7700
H82.14551.08492.99023.80902.99021.77001.7700

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 109.619 C1 C2 H7 109.619
C1 C2 H8 109.619 C2 C1 Br3 109.812
C2 C1 Br4 109.812 C2 C1 Br5 109.812
Br3 C1 Br4 109.128 Br3 C1 Br5 109.128
Br4 C1 Br5 109.128 H6 C2 H7 109.323
H6 C2 H8 109.323 H7 C2 H8 109.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability