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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-5182.746614
Energy at 298.15K 
HF Energy-5182.746614
Nuclear repulsion energy352.268152
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/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 3177 3014 2.50 84.82 0.09 0.16
2 A1 1480 1404 0.07 13.13 0.73 0.84
3 A1 602 571 5.00 14.16 0.09 0.16
4 A1 181 171 0.09 4.14 0.44 0.61
5 A2 1151 1092 0.00 7.77 0.75 0.86
6 B1 3269 3100 0.81 56.17 0.75 0.86
7 B1 822 780 4.91 2.31 0.75 0.86
8 B2 1257 1192 71.19 1.10 0.75 0.86
9 B2 677 642 87.92 5.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6307.4 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 5982.6 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/6-31G*
ABC
0.87250 0.04100 0.03946

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.939
H2 -0.900 0.000 1.546
H3 0.900 0.000 1.546
Br4 0.000 1.611 -0.125
Br5 0.000 -1.611 -0.125

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08551.08551.93031.9303
H21.08551.80032.48902.4890
H31.08551.80032.48902.4890
Br41.93032.48902.48903.2216
Br51.93032.48902.48903.2216

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.042 H2 C1 Br4 107.938
H2 C1 Br5 107.938 H3 C1 Br4 107.938
H3 C1 Br5 107.938 Br4 C1 Br5 113.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.358      
2 H 0.253      
3 H 0.253      
4 Br -0.074      
5 Br -0.074      


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 1.579 1.579
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.618 0.000 0.000
y 0.000 -43.882 0.000
z 0.000 0.000 -39.998
Traceless
 xyz
x -0.678 0.000 0.000
y 0.000 -2.574 0.000
z 0.000 0.000 3.252
Polar
3z2-r26.504
x2-y21.264
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.583 0.000 0.000
y 0.000 8.921 0.000
z 0.000 0.000 5.408


<r2> (average value of r2) Å2
<r2> 220.736
(<r2>)1/2 14.857