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/6-311G*

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/6-311G*
 hartrees
Energy at 0K-7756.006114
Energy at 298.15K-7756.016001
Nuclear repulsion energy806.780147
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/6-311G*
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 3297 3051 1.12      
2 A1 566 523 0.64      
3 A1 237 219 0.00      
4 E 1265 1170 40.17      
4 E 1265 1170 40.17      
5 E 723 669 84.81      
5 E 723 669 84.81      
6 E 163 151 0.01      
6 E 163 151 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 4200.5 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 3886.7 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/6-311G*
ABC
0.04119 0.04119 0.02091

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.517
H2 0.000 0.000 1.594
Br3 0.000 1.845 -0.045
Br4 1.598 -0.923 -0.045
Br5 -1.598 -0.923 -0.045

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.07751.92881.92881.9288
H21.07752.46812.46812.4681
Br31.92882.46813.19613.1961
Br41.92882.46813.19613.1961
Br51.92882.46813.19613.1961

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.927 H2 C1 Br4 106.927
H2 C1 Br5 106.927 Br3 C1 Br4 111.891
Br3 C1 Br5 111.891 Br4 C1 Br5 111.891
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability