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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: wB97X-D/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/STO-3G
 hartrees
Energy at 0K-5131.000745
Energy at 298.15K 
HF Energy-5131.000745
Nuclear repulsion energy349.011245
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 wB97X-D/STO-3G
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 3356 3356 0.26 41.24 0.13 0.22
2 A1 1641 1641 0.00 15.90 0.73 0.84
3 A1 677 677 6.75 9.15 0.14 0.24
4 A1 192 192 0.57 3.63 0.58 0.73
5 A2 1270 1270 0.00 13.90 0.75 0.86
6 B1 3475 3475 0.10 32.76 0.75 0.86
7 B1 889 889 0.17 2.13 0.75 0.86
8 B2 1378 1378 54.24 2.57 0.75 0.86
9 B2 838 838 51.25 6.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6857.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6857.1 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 wB97X-D/STO-3G
ABC
0.91371 0.03980 0.03842

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.904
H2 -0.893 0.000 1.553
H3 0.893 0.000 1.553
Br4 0.000 1.635 -0.122
Br5 0.000 -1.635 -0.122

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.10371.10371.93011.9301
H21.10371.78562.50492.5049
H31.10371.78562.50492.5049
Br41.93012.50492.50493.2701
Br51.93012.50492.50493.2701

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 107.986 H2 C1 Br4 108.203
H2 C1 Br5 108.203 H3 C1 Br4 108.203
H3 C1 Br5 108.203 Br4 C1 Br5 115.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.249      
2 H 0.111      
3 H 0.111      
4 Br 0.013      
5 Br 0.013      


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 1.362 1.362
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.864 0.000 0.000
y 0.000 -41.480 0.000
z 0.000 0.000 -37.533
Traceless
 xyz
x 0.642 0.000 0.000
y 0.000 -3.281 0.000
z 0.000 0.000 2.639
Polar
3z2-r25.278
x2-y22.615
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.940 0.000 0.000
y 0.000 4.554 0.000
z 0.000 0.000 1.814


<r2> (average value of r2) Å2
<r2> 224.034
(<r2>)1/2 14.968