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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-45.603026
Energy at 298.15K-45.612724
HF Energy-45.417175
Nuclear repulsion energy51.785035
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 MP2/CEP-121G
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 3143 3068 1.98      
2 A1 508 495 0.38      
3 A1 215 210 0.00      
4 E 1193 1164 44.95      
4 E 1193 1164 44.95      
5 E 636 621 91.97      
5 E 636 621 91.97      
6 E 150 147 0.00      
6 E 150 147 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 3911.7 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 3817.8 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 MP2/CEP-121G
ABC
0.03795 0.03795 0.01926

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.535
H2 0.000 0.000 1.629
Br3 0.000 1.923 -0.046
Br4 1.665 -0.961 -0.046
Br5 -1.665 -0.961 -0.046

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.09352.00852.00852.0085
H21.09352.54972.54972.5497
Br32.00852.54973.33013.3301
Br42.00852.54973.33013.3301
Br52.00852.54973.33013.3301

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.819 H2 C1 Br4 106.819
H2 C1 Br5 106.819 Br3 C1 Br4 111.988
Br3 C1 Br5 111.988 Br4 C1 Br5 111.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability