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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3PW91/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-5187.734318
Energy at 298.15K 
HF Energy-5187.734318
Nuclear repulsion energy351.285358
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 B3PW91/daug-cc-pVTZ
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 3136 3136 0.97 95.09 0.04 0.08
2 A1 1429 1429 0.02 10.18 0.51 0.68
3 A1 588 588 3.44 17.98 0.06 0.12
4 A1 170 170 0.08 3.60 0.32 0.49
5 A2 1116 1116 0.00 0.88 0.75 0.86
6 B1 3221 3221 2.95 43.49 0.75 0.86
7 B1 816 816 3.75 0.30 0.75 0.86
8 B2 1212 1212 59.37 0.25 0.75 0.86
9 B2 652 652 98.25 3.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6169.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6169.8 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 B3PW91/daug-cc-pVTZ
ABC
0.88962 0.04058 0.03911

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.929
H2 -0.898 0.000 1.532
H3 0.898 0.000 1.532
Br4 0.000 1.619 -0.123
Br5 0.000 -1.619 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08241.08241.93081.9308
H21.08241.79672.48392.4839
H31.08241.79672.48392.4839
Br41.93082.48392.48393.2382
Br51.93082.48392.48393.2382

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.197 H2 C1 Br4 107.691
H2 C1 Br5 107.691 H3 C1 Br4 107.691
H3 C1 Br5 107.691 Br4 C1 Br5 113.974
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.085      
2 H 0.438      
3 H 0.438      
4 Br -0.396      
5 Br -0.396      


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 1.475 1.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.055 0.000 0.000
y 0.000 -44.591 0.000
z 0.000 0.000 -40.682
Traceless
 xyz
x -0.418 0.000 0.000
y 0.000 -2.722 0.000
z 0.000 0.000 3.141
Polar
3z2-r26.281
x2-y21.536
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.956 0.000 0.000
y 0.000 11.456 0.000
z 0.000 0.000 7.609


<r2> (average value of r2) Å2
<r2> 222.765
(<r2>)1/2 14.925