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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: HSEh1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-311G*
 hartrees
Energy at 0K-5186.861570
Energy at 298.15K 
HF Energy-5186.861570
Nuclear repulsion energy350.844778
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 HSEh1PBE/6-311G*
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 3155 3028 4.21 88.36 0.08 0.14
2 A1 1454 1395 0.00 12.63 0.67 0.81
3 A1 592 568 3.82 13.77 0.09 0.17
4 A1 174 167 0.07 5.67 0.48 0.65
5 A2 1146 1099 0.00 7.35 0.75 0.86
6 B1 3242 3111 0.26 52.82 0.75 0.86
7 B1 828 794 8.62 2.40 0.75 0.86
8 B2 1249 1198 76.17 1.45 0.75 0.86
9 B2 657 631 108.10 5.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6248.0 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 5995.6 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 HSEh1PBE/6-311G*
ABC
0.89325 0.04044 0.03897

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.925
H2 -0.897 0.000 1.535
H3 0.897 0.000 1.535
Br4 0.000 1.622 -0.123
Br5 0.000 -1.622 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08421.08421.93131.9313
H21.08421.79332.48672.4867
H31.08421.79332.48672.4867
Br41.93132.48672.48673.2441
Br51.93132.48672.48673.2441

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.578 H2 C1 Br4 107.769
H2 C1 Br5 107.769 H3 C1 Br4 107.769
H3 C1 Br5 107.769 Br4 C1 Br5 114.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.657      
2 H 0.312      
3 H 0.312      
4 Br 0.017      
5 Br 0.017      


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 1.592 1.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.249 0.000 0.000
y 0.000 -44.514 0.000
z 0.000 0.000 -40.768
Traceless
 xyz
x -0.609 0.000 0.000
y 0.000 -2.505 0.000
z 0.000 0.000 3.114
Polar
3z2-r26.228
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 3.985 0.000 0.000
y 0.000 9.179 0.000
z 0.000 0.000 5.086


<r2> (average value of r2) Å2
<r2> 223.450
(<r2>)1/2 14.948