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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-5184.510069
Energy at 298.15K 
HF Energy-5183.870942
Nuclear repulsion energy355.056916
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/Def2TZVPP
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 3259 3259 1.92      
2 A1 1516 1516 0.02      
3 A1 628 628 4.30      
4 A1 183 183 0.11      
5 A2 1189 1189 0.00      
6 B1 3344 3344 1.73      
7 B1 862 862 3.78      
8 B2 1297 1297 70.19      
9 B2 729 729 72.43      

Unscaled Zero Point Vibrational Energy (zpe) 6503.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6503.6 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/Def2TZVPP
ABC
0.89903 0.04154 0.04001

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.924
H2 -0.887 0.000 1.527
H3 0.887 0.000 1.527
Br4 0.000 1.600 -0.123
Br5 0.000 -1.600 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.07271.07271.91221.9122
H21.07271.77372.46382.4638
H31.07271.77372.46382.4638
Br41.91222.46382.46383.2006
Br51.91222.46382.46383.2006

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.528 H2 C1 Br4 107.935
H2 C1 Br5 107.935 H3 C1 Br4 107.935
H3 C1 Br5 107.935 Br4 C1 Br5 113.629
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability