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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/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 B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-5183.056619
Energy at 298.15K 
HF Energy-5183.056619
Nuclear repulsion energy352.910543
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 B3LYP/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 3129 3020 2.02      
2 A1 1441 1390 0.05      
3 A1 593 572 3.90      
4 A1 174 168 0.10      
5 A2 1119 1080 0.00      
6 B1 3210 3098 0.64      
7 B1 825 796 3.26      
8 B2 1222 1179 57.40      
9 B2 652 629 88.64      

Unscaled Zero Point Vibrational Energy (zpe) 6182.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5965.8 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 B3LYP/6-31G(2df,p)
ABC
0.88105 0.04111 0.03957

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
H2 -0.896 0.000 1.545
H3 0.896 0.000 1.545
Br4 0.000 1.609 -0.124
Br5 0.000 -1.609 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08541.08541.92471.9247
H21.08541.79302.48522.4852
H31.08541.79302.48522.4852
Br41.92472.48522.48523.2174
Br51.92472.48522.48523.2174

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.364 H2 C1 Br4 108.031
H2 C1 Br5 108.031 H3 C1 Br4 108.031
H3 C1 Br5 108.031 Br4 C1 Br5 113.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.454      
2 H 0.194      
3 H 0.194      
4 Br 0.033      
5 Br 0.033      


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 1.449 1.449
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.465 0.000 0.000
y 0.000 -44.106 0.000
z 0.000 0.000 -40.098
Traceless
 xyz
x -0.363 0.000 0.000
y 0.000 -2.824 0.000
z 0.000 0.000 3.188
Polar
3z2-r26.375
x2-y21.641
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.756 0.000 0.000
y 0.000 10.077 0.000
z 0.000 0.000 6.456


<r2> (average value of r2) Å2
<r2> 220.201
(<r2>)1/2 14.839