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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/cc-pVTZ-PP
 hartrees
Energy at 0K-870.700076
Energy at 298.15K 
HF Energy-870.053884
Nuclear repulsion energy213.289037
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/cc-pVTZ-PP
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 3166 3166 2.50      
2 A1 1466 1466 0.06      
3 A1 608 608 3.25      
4 A1 176 176 0.09      
5 A2 1141 1141 0.00      
6 B1 3248 3248 0.91      
7 B1 834 834 3.80      
8 B2 1247 1247 63.43      
9 B2 703 703 63.35      

Unscaled Zero Point Vibrational Energy (zpe) 6295.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6295.1 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 CCD/cc-pVTZ-PP
ABC
0.88685 0.04131 0.03978

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ-PP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.930
H2 -0.894 0.000 1.537
H3 0.894 0.000 1.537
Br4 0.000 1.605 -0.124
Br5 0.000 -1.605 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08061.08061.91981.9198
H21.08061.78852.47632.4763
H31.08061.78852.47632.4763
Br41.91982.47632.47633.2094
Br51.91982.47632.47633.2094

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.697 H2 C1 Br4 107.949
H2 C1 Br5 107.949 H3 C1 Br4 107.949
H3 C1 Br5 107.949 Br4 C1 Br5 113.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability