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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-5179.182764
Energy at 298.15K-5179.190814
HF Energy-5178.799162
Nuclear repulsion energy350.239301
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/6-31G*
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 3189 3018 2.37      
2 A1 1497 1417 0.25      
3 A1 594 562 4.90      
4 A1 181 171 0.11      
5 A2 1158 1096 0.00      
6 B1 3279 3103 0.51      
7 B1 832 788 4.24      
8 B2 1267 1200 65.70      
9 B2 671 635 65.69      

Unscaled Zero Point Vibrational Energy (zpe) 6334.0 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 5995.2 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 CCD/6-31G*
ABC
0.85620 0.04058 0.03904

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.946
H2 -0.899 0.000 1.561
H3 0.899 0.000 1.561
Br4 0.000 1.622 -0.126
Br5 0.000 -1.622 -0.126

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08901.08901.94471.9447
H21.08901.79822.50712.5071
H31.08901.79822.50712.5071
Br41.94472.50712.50713.2450
Br51.94472.50712.50713.2450

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.298 H2 C1 Br4 108.124
H2 C1 Br5 108.124 H3 C1 Br4 108.124
H3 C1 Br5 108.124 Br4 C1 Br5 113.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability