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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-7719.535976
Energy at 298.15K-7719.545772
HF Energy-7719.021327
Nuclear repulsion energy802.253148
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 CCD/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 A1 3190 3052 0.66      
2 A1 552 528 1.32      
3 A1 221 211 0.03      
4 E 1217 1164 27.55      
4 E 1217 1164 27.55      
5 E 701 671 63.89      
5 E 701 671 63.89      
6 E 154 147 0.06      
6 E 154 147 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 4053.8 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 3877.4 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 CCD/3-21G*
ABC
0.04081 0.04081 0.02076

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.562
H2 0.000 0.000 1.650
Br3 0.000 1.852 -0.048
Br4 1.604 -0.926 -0.048
Br5 -1.604 -0.926 -0.048

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08771.94991.94991.9499
H21.08772.51232.51232.5123
Br31.94992.51233.20783.2078
Br41.94992.51233.20783.2078
Br51.94992.51233.20783.2078

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 108.226 H2 C1 Br4 108.226
H2 C1 Br5 108.226 Br3 C1 Br4 110.688
Br3 C1 Br5 110.688 Br4 C1 Br5 110.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability