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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-7787.811508
Energy at 298.15K-7787.823329
HF Energy-7787.138658
Nuclear repulsion energy974.106092
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 QCISD/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 3125 2942 4.18      
2 A1 1464 1378 3.93      
3 A1 1104 1039 3.57      
4 A1 419 395 4.81      
5 A1 225 212 0.07      
6 A2 320 301 0.00      
7 E 3225 3036 3.66      
7 E 3225 3036 3.66      
8 E 1536 1446 2.98      
8 E 1536 1446 2.98      
9 E 1128 1062 40.00      
9 E 1128 1062 40.00      
10 E 656 618 66.99      
10 E 656 618 66.98      
11 E 283 266 1.07      
11 E 283 266 1.07      
12 E 159 150 0.04      
12 E 159 150 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10314.3 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9709.9 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 QCISD/6-31G**
ABC
0.03518 0.03518 0.02090

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.463
C2 0.000 0.000 1.982
Br3 0.000 1.842 -0.207
Br4 1.595 -0.921 -0.207
Br5 -1.595 -0.921 -0.207
H6 0.000 -1.027 2.343
H7 0.889 0.514 2.343
H8 -0.889 0.514 2.343

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51891.96021.96021.96022.14202.14202.1420
C21.51892.86062.86062.86061.08861.08861.0886
Br31.96022.86063.19103.19103.83823.00923.0092
Br41.96022.86063.19103.19103.00923.00923.8382
Br51.96022.86063.19103.19103.00923.83823.0092
H62.14201.08863.83823.00923.00921.77901.7790
H72.14201.08863.00923.00923.83821.77901.7790
H82.14201.08863.00923.83823.00921.77901.7790

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 109.357 C1 C2 H7 109.357
C1 C2 H8 109.357 C2 C1 Br3 109.971
C2 C1 Br4 109.971 C2 C1 Br5 109.971
Br3 C1 Br4 108.967 Br3 C1 Br5 108.967
Br4 C1 Br5 108.967 H6 C2 H7 109.585
H6 C2 H8 109.585 H7 C2 H8 109.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability