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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-5184.138189
Energy at 298.15K 
HF Energy-5183.768391
Nuclear repulsion energy351.499110
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/6-311G*
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 3222 2982 4.93      
2 A1 1515 1401 0.07      
3 A1 610 564 4.38      
4 A1 181 167 0.09      
5 A2 1195 1106 0.00      
6 B1 3305 3058 0.11      
7 B1 862 798 6.91      
8 B2 1311 1213 81.03      
9 B2 702 649 79.35      

Unscaled Zero Point Vibrational Energy (zpe) 6451.1 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 5969.2 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/6-311G*
ABC
0.88868 0.04065 0.03916

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.929
H2 -0.893 0.000 1.538
H3 0.893 0.000 1.538
Br4 0.000 1.618 -0.124
Br5 0.000 -1.618 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08061.08061.92991.9299
H21.08061.78512.48472.4847
H31.08061.78512.48472.4847
Br41.92992.48472.48473.2356
Br51.92992.48472.48473.2356

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.381 H2 C1 Br4 107.898
H2 C1 Br5 107.898 H3 C1 Br4 107.898
H3 C1 Br5 107.898 Br4 C1 Br5 113.921
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability