return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHBr3 (bromoform)

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-7747.891003
Energy at 298.15K-7747.900710
Nuclear repulsion energy787.543241
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 CISD/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 3282 3078 0.38      
2 A1 513 481 1.66      
3 A1 218 205 0.02      
4 E 1212 1137 31.64      
4 E 1212 1137 31.64      
5 E 646 606 76.25      
5 E 646 606 76.25      
6 E 153 143 0.07      
6 E 153 143 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 4017.2 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 3767.3 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 CISD/6-31G
ABC
0.03927 0.03927 0.01995

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.551
H2 0.000 0.000 1.634
Br3 0.000 1.889 -0.047
Br4 1.636 -0.945 -0.047
Br5 -1.636 -0.945 -0.047

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08261.98141.98141.9814
H21.08262.52842.52842.5284
Br31.98142.52843.27193.2719
Br41.98142.52843.27193.2719
Br51.98142.52843.27193.2719

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.567 H2 C1 Br4 107.567
H2 C1 Br5 107.567 Br3 C1 Br4 111.307
Br3 C1 Br5 111.307 Br4 C1 Br5 111.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability