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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-5184.262609
Energy at 298.15K 
HF Energy-5183.803118
Nuclear repulsion energy350.459085
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/aug-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 3149 3037 2.23      
2 A1 1437 1386 0.09      
3 A1 599 577 3.35      
4 A1 177 171 0.09      
5 A2 1139 1099 0.00      
6 B1 3236 3121 1.42      
7 B1 826 797 3.41      
8 B2 1238 1195 61.34      
9 B2 686 661 66.74      

Unscaled Zero Point Vibrational Energy (zpe) 6243.4 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 6021.8 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/aug-cc-pVDZ
ABC
0.86618 0.04056 0.03905

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.941
H2 -0.908 0.000 1.553
H3 0.908 0.000 1.553
Br4 0.000 1.619 -0.125
Br5 0.000 -1.619 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09471.09471.93911.9391
H21.09471.81602.50252.5025
H31.09471.81602.50252.5025
Br41.93912.50252.50253.2389
Br51.93912.50252.50253.2389

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.085 H2 C1 Br4 107.891
H2 C1 Br5 107.891 H3 C1 Br4 107.891
H3 C1 Br5 107.891 Br4 C1 Br5 113.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability