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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-5182.809809
Energy at 298.15K 
HF Energy-5182.809809
Nuclear repulsion energy354.354315
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 TPSSh/6-31G(2df,p)
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 3127 3018 2.30 78.49 0.06 0.12
2 A1 1447 1396 0.09 10.45 0.71 0.83
3 A1 596 575 4.15 13.96 0.06 0.12
4 A1 173 167 0.13 3.84 0.37 0.54
5 A2 1118 1079 0.00 3.27 0.75 0.86
6 B1 3212 3099 0.65 50.19 0.75 0.86
7 B1 823 794 3.16 1.14 0.75 0.86
8 B2 1216 1174 57.98 0.22 0.75 0.86
9 B2 658 635 93.29 3.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6184.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5968.3 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 TPSSh/6-31G(2df,p)
ABC
0.88197 0.04150 0.03994

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.932
H2 -0.898 0.000 1.542
H3 0.898 0.000 1.542
Br4 0.000 1.601 -0.124
Br5 0.000 -1.601 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08571.08571.91811.9181
H21.08571.79702.47902.4790
H31.08571.79702.47902.4790
Br41.91812.47902.47903.2020
Br51.91812.47902.47903.2020

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.702 H2 C1 Br4 108.008
H2 C1 Br5 108.008 H3 C1 Br4 108.008
H3 C1 Br5 108.008 Br4 C1 Br5 113.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.499      
2 H 0.219      
3 H 0.219      
4 Br 0.031      
5 Br 0.031      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.471 1.471
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.866 0.000 0.000
y 0.000 10.135 0.000
z 0.000 0.000 6.547


<r2> (average value of r2) Å2
<r2> 218.373
(<r2>)1/2 14.777