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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B2PLYP/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 B2PLYP/6-31G
 hartrees
Energy at 0K-5181.357401
Energy at 298.15K 
HF Energy-5181.300232
Nuclear repulsion energy343.255921
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 B2PLYP/6-31G
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 3202 3202 3.15 104.06 0.09 0.16
2 A1 1487 1487 0.05 18.99 0.73 0.84
3 A1 543 543 5.77 17.29 0.14 0.25
4 A1 165 165 0.11 8.24 0.55 0.71
5 A2 1135 1135 0.00 19.51 0.75 0.86
6 B1 3304 3304 0.02 62.94 0.75 0.86
7 B1 825 825 7.87 6.57 0.75 0.86
8 B2 1254 1254 64.26 1.97 0.75 0.86
9 B2 598 598 98.39 9.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6256.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6256.5 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 B2PLYP/6-31G
ABC
0.82339 0.03894 0.03745

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.975
H2 -0.904 0.000 1.571
H3 0.904 0.000 1.571
Br4 0.000 1.653 -0.128
Br5 0.000 -1.653 -0.128

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08291.08291.98761.9876
H21.08291.80862.53742.5374
H31.08291.80862.53742.5374
Br41.98762.53742.53743.3059
Br51.98762.53742.53743.3059

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.251 H2 C1 Br4 107.788
H2 C1 Br5 107.788 H3 C1 Br4 107.788
H3 C1 Br5 107.788 Br4 C1 Br5 112.533
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.660      
2 H 0.255      
3 H 0.255      
4 Br 0.075      
5 Br 0.075      


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 1.803 1.803
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.258 0.000 0.000
y 0.000 -45.591 0.000
z 0.000 0.000 -40.828
Traceless
 xyz
x -0.049 0.000 0.000
y 0.000 -3.547 0.000
z 0.000 0.000 3.596
Polar
3z2-r27.192
x2-y22.333
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.472 0.000 0.000
y 0.000 8.395 0.000
z 0.000 0.000 3.938


<r2> (average value of r2) Å2
<r2> 231.693
(<r2>)1/2 15.221