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All results from a given calculation for CHBr2F (dibromofluoromethane)

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-5258.083464
Energy at 298.15K 
HF Energy-5257.651954
Nuclear repulsion energy480.569681
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/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3263 3049 4.00      
2 A' 1389 1298 19.88      
3 A' 1140 1066 105.32      
4 A' 653 610 23.07      
5 A' 357 333 0.85      
6 A' 178 167 0.07      
7 A" 1289 1205 84.15      
8 A" 750 701 162.98      
9 A" 291 272 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 4654.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 4349.1 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/3-21G*
ABC
0.17540 0.04144 0.03428

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.106 0.803 0.000
H2 -1.013 1.391 0.000
F3 1.007 1.627 0.000
Br4 -0.106 -0.298 1.594
Br5 -0.106 -0.298 -1.594

Atom - Atom Distances (Å)
  C1 H2 F3 Br4 Br5
C11.08091.38521.93771.9377
H21.08092.03402.49362.4936
F31.38522.03402.73662.7366
Br41.93772.49362.73663.1888
Br51.93772.49362.73663.1888

picture of dibromofluoromethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 F3 110.526 H2 C1 Br4 108.010
H2 C1 Br5 108.010 F3 C1 Br4 109.764
F3 C1 Br5 109.764 Br4 C1 Br5 110.737
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability