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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-5184.223218
Energy at 298.15K 
HF Energy-5183.793904
Nuclear repulsion energy349.941440
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-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 3159 3023 4.73      
2 A1 1450 1387 0.26      
3 A1 598 572 3.84      
4 A1 176 169 0.09      
5 A2 1138 1088 0.00      
6 B1 3246 3106 0.13      
7 B1 825 789 4.30      
8 B2 1243 1189 65.15      
9 B2 690 660 64.53      

Unscaled Zero Point Vibrational Energy (zpe) 6262.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 5991.4 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-pVDZ
ABC
0.87453 0.04035 0.03887

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.935
H2 -0.907 0.000 1.553
H3 0.907 0.000 1.553
Br4 0.000 1.624 -0.124
Br5 0.000 -1.624 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09721.09721.93851.9385
H21.09721.81312.50412.5041
H31.09721.81312.50412.5041
Br41.93852.50412.50413.2473
Br51.93852.50412.50413.2473

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.431 H2 C1 Br4 107.922
H2 C1 Br5 107.922 H3 C1 Br4 107.922
H3 C1 Br5 107.922 Br4 C1 Br5 113.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability