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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/cc-pVTZ

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
 hartrees
Energy at 0K-5184.610958
Energy at 298.15K 
HF Energy-5183.963288
Nuclear repulsion energy353.241021
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
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 3167 2957 2.50      
2 A1 1467 1370 0.02      
3 A1 608 568 3.47      
4 A1 177 165 0.10      
5 A2 1147 1071 0.00      
6 B1 3247 3032 0.90      
7 B1 833 778 3.75      
8 B2 1250 1167 63.34      
9 B2 704 658 64.04      

Unscaled Zero Point Vibrational Energy (zpe) 6299.7 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 5882.0 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
ABC
0.88839 0.04113 0.03961

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

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 1.537
H3 0.893 0.000 1.537
Br4 0.000 1.608 -0.124
Br5 0.000 -1.608 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08061.08061.92211.9221
H21.08061.78692.47822.4782
H31.08061.78692.47822.4782
Br41.92212.47822.47823.2164
Br51.92212.47822.47823.2164

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.550 H2 C1 Br4 107.940
H2 C1 Br5 107.940 H3 C1 Br4 107.940
H3 C1 Br5 107.940 Br4 C1 Br5 113.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability