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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: wB97X-D/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-33.597611
Energy at 298.15K 
HF Energy-33.597611
Nuclear repulsion energy32.807877
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/CEP-121G
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 3122 3122 18.29 119.26 0.11 0.19
2 A1 1445 1445 0.18 21.68 0.63 0.77
3 A1 571 571 6.69 24.70 0.13 0.23
4 A1 174 174 0.06 10.03 0.56 0.71
5 A2 1145 1145 0.00 22.61 0.75 0.86
6 B1 3237 3237 2.26 63.87 0.75 0.86
7 B1 836 836 12.86 7.06 0.75 0.86
8 B2 1271 1271 81.96 2.36 0.75 0.86
9 B2 646 646 124.26 13.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6223.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6223.0 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/CEP-121G
ABC
0.85429 0.03853 0.03713

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.952
H2 -0.904 0.000 1.554
H3 0.904 0.000 1.554
Br4 0.000 1.662 -0.126
Br5 0.000 -1.662 -0.126

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08611.08611.98101.9810
H21.08611.80852.53002.5300
H31.08611.80852.53002.5300
Br41.98102.53002.53003.3237
Br51.98102.53002.53003.3237

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.735 H2 C1 Br4 107.544
H2 C1 Br5 107.544 H3 C1 Br4 107.544
H3 C1 Br5 107.544 Br4 C1 Br5 114.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.775      
2 H 0.264      
3 H 0.264      
4 Br 0.123      
5 Br 0.123      


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 1.909 1.909
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.501 0.000 0.000
y 0.000 -38.798 0.000
z 0.000 0.000 -33.945
Traceless
 xyz
x -0.130 0.000 0.000
y 0.000 -3.575 0.000
z 0.000 0.000 3.705
Polar
3z2-r27.409
x2-y22.297
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.371 0.000 0.000
y 0.000 8.884 0.000
z 0.000 0.000 4.066


<r2> (average value of r2) Å2
<r2> 71.721
(<r2>)1/2 8.469