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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-5183.871080
Energy at 298.15K 
HF Energy-5183.871080
Nuclear repulsion energy352.791026
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 HF/Def2TZVPP
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 3296 2987 3.47 90.47 0.07 0.13
2 A1 1569 1422 0.17 12.31 0.57 0.73
3 A1 625 566 6.82 22.69 0.11 0.19
4 A1 185 168 0.13 3.86 0.40 0.57
5 A2 1227 1112 0.00 2.00 0.75 0.86
6 B1 3383 3066 1.33 48.09 0.75 0.86
7 B1 889 806 3.60 0.85 0.75 0.86
8 B2 1342 1216 90.65 0.93 0.75 0.86
9 B2 718 651 94.42 12.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6616.9 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 5997.5 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 HF/Def2TZVPP
ABC
0.89057 0.04098 0.03947

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.930
H2 -0.887 0.000 1.530
H3 0.887 0.000 1.530
Br4 0.000 1.611 -0.123
Br5 0.000 -1.611 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.07121.07121.92511.9251
H21.07121.77502.47332.4733
H31.07121.77502.47332.4733
Br41.92512.47332.47333.2225
Br51.92512.47332.47333.2225

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.883 H2 C1 Br4 107.846
H2 C1 Br5 107.846 H3 C1 Br4 107.846
H3 C1 Br5 107.846 Br4 C1 Br5 113.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.096      
2 H 0.137      
3 H 0.137      
4 Br -0.089      
5 Br -0.089      


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 1.715 1.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.418 0.000 0.000
y 0.000 -45.506 0.000
z 0.000 0.000 -40.879
Traceless
 xyz
x -0.226 0.000 0.000
y 0.000 -3.357 0.000
z 0.000 0.000 3.584
Polar
3z2-r27.167
x2-y22.088
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.475 0.000 0.000
y 0.000 10.030 0.000
z 0.000 0.000 6.357


<r2> (average value of r2) Å2
<r2> 221.270
(<r2>)1/2 14.875