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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: MP2=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-5127.330603
Energy at 298.15K 
HF Energy-5127.271536
Nuclear repulsion energy332.145580
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=FULL/STO-3G
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' 3466 3081 1.10 40.72 0.31 0.48
2 A' 698 621 13.94 4.55 0.37 0.54
3 A' 548 487 3.61 5.58 0.13 0.23
4 A' 202 180 0.54 2.73 0.61 0.76
5 A" 1366 1214 92.26 6.85 0.75 0.86
6 A" 936 832 77.87 3.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3608.3 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 3207.4 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 MP2=FULL/STO-3G
ABC
1.28033 0.03945 0.03831

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.829 0.000
H2 -0.551 1.783 0.000
Br3 0.007 -0.097 1.645
Br4 0.007 -0.097 -1.645

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.10521.88751.8875
H21.10522.55922.5592
Br31.88752.55923.2898
Br41.88752.55923.2898

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 115.036 H2 C1 Br4 115.036
Br3 C1 Br4 121.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability