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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CISD/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/daug-cc-pVDZ
 hartrees
Energy at 0K-5184.210823
Energy at 298.15K 
HF Energy-5183.804515
Nuclear repulsion energy351.920830
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/daug-cc-pVDZ
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 3216 3216 1.99      
2 A1 1473 1473 0.08      
3 A1 612 612 4.13      
4 A1 181 181 0.09      
5 A2 1170 1170 0.00      
6 B1 3305 3305 1.79      
7 B1 847 847 3.08      
8 B2 1262 1262 70.52      
9 B2 702 702 77.71      

Unscaled Zero Point Vibrational Energy (zpe) 6383.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6383.9 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/daug-cc-pVDZ
ABC
0.87695 0.04087 0.03935

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.902 0.000 1.544
H3 0.902 0.000 1.544
Br4 0.000 1.613 -0.124
Br5 0.000 -1.613 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08821.08821.93031.9303
H21.08821.80442.48992.4899
H31.08821.80442.48992.4899
Br41.93032.48992.48993.2267
Br51.93032.48992.48993.2267

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.008 H2 C1 Br4 107.877
H2 C1 Br5 107.877 H3 C1 Br4 107.877
H3 C1 Br5 107.877 Br4 C1 Br5 113.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability