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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-5182.435911
Energy at 298.15K 
HF Energy-5182.435911
Nuclear repulsion energy342.867730
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
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 3183 3062 2.94      
2 A1 1468 1412 0.00      
3 A1 538 517 6.16      
4 A1 163 156 0.10      
5 A2 1120 1077 0.00      
6 B1 3287 3162 0.01      
7 B1 817 786 8.50      
8 B2 1237 1190 62.06      
9 B2 576 554 117.43      

Unscaled Zero Point Vibrational Energy (zpe) 6193.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 5958.2 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
ABC
0.82647 0.03881 0.03734

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.973
H2 -0.906 0.000 1.568
H3 0.906 0.000 1.568
Br4 0.000 1.656 -0.128
Br5 0.000 -1.656 -0.128

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08361.08361.98861.9886
H21.08361.81132.53752.5375
H31.08361.81132.53752.5375
Br41.98862.53752.53753.3115
Br51.98862.53752.53753.3115

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 113.392 H2 C1 Br4 107.703
H2 C1 Br5 107.703 H3 C1 Br4 107.703
H3 C1 Br5 107.703 Br4 C1 Br5 112.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.668      
2 H 0.258      
3 H 0.258      
4 Br 0.076      
5 Br 0.076      


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 1.813 1.813
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.974 0.000 0.000
y 0.000 -45.255 0.000
z 0.000 0.000 -40.552
Traceless
 xyz
x -0.071 0.000 0.000
y 0.000 -3.492 0.000
z 0.000 0.000 3.563
Polar
3z2-r27.126
x2-y22.281
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.506 0.000 0.000
y 0.000 8.554 0.000
z 0.000 0.000 3.955


<r2> (average value of r2) Å2
<r2> 232.109
(<r2>)1/2 15.235