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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: CCD/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-5184.633079
Energy at 298.15K 
HF Energy-5183.964254
Nuclear repulsion energy353.886797
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-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3168 3032 1.47      
2 A1 1477 1413 0.00      
3 A1 611 584 3.14      
4 A1 178 170 0.09      
5 A2 1154 1104 0.00      
6 B1 3248 3108 2.26      
7 B1 843 806 3.22      
8 B2 1260 1205 59.53      
9 B2 706 675 62.85      

Unscaled Zero Point Vibrational Energy (zpe) 6321.2 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 6049.4 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/aug-cc-pVTZ
ABC
0.88662 0.04133 0.03979

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.930
H2 -0.895 0.000 1.536
H3 0.895 0.000 1.536
Br4 0.000 1.604 -0.124
Br5 0.000 -1.604 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08081.08081.91971.9197
H21.08081.78982.47612.4761
H31.08081.78982.47612.4761
Br41.91972.47612.47613.2088
Br51.91972.47612.47613.2088

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.789 H2 C1 Br4 107.932
H2 C1 Br5 107.932 H3 C1 Br4 107.932
H3 C1 Br5 107.932 Br4 C1 Br5 113.391
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability