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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: HSEh1PBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-5186.878572
Energy at 298.15K 
HF Energy-5186.878572
Nuclear repulsion energy351.047003
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/cc-pVDZ
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 3145 3025 1.99 102.09 0.06 0.12
2 A1 1409 1355 0.00 11.08 0.73 0.84
3 A1 593 571 4.27 13.06 0.09 0.17
4 A1 174 167 0.08 5.55 0.48 0.65
5 A2 1108 1065 0.00 7.12 0.75 0.86
6 B1 3242 3118 1.95 58.07 0.75 0.86
7 B1 810 779 5.76 2.34 0.75 0.86
8 B2 1204 1158 63.84 0.51 0.75 0.86
9 B2 661 635 102.89 4.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6172.2 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 5937.0 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/cc-pVDZ
ABC
0.88652 0.04055 0.03908

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.928
H2 -0.907 0.000 1.540
H3 0.907 0.000 1.540
Br4 0.000 1.620 -0.124
Br5 0.000 -1.620 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.09401.09401.93091.9309
H21.09401.81342.49252.4925
H31.09401.81342.49252.4925
Br41.93092.49252.49253.2392
Br51.93092.49252.49253.2392

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 111.948 H2 C1 Br4 107.739
H2 C1 Br5 107.739 H3 C1 Br4 107.739
H3 C1 Br5 107.739 Br4 C1 Br5 114.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 H 0.142      
3 H 0.142      
4 Br -0.037      
5 Br -0.037      


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 1.495 1.495
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.745 0.000 0.000
y 0.000 -43.832 0.000
z 0.000 0.000 -40.369
Traceless
 xyz
x -0.644 0.000 0.000
y 0.000 -2.275 0.000
z 0.000 0.000 2.919
Polar
3z2-r25.838
x2-y21.088
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.909 0.000 0.000
y 0.000 8.836 0.000
z 0.000 0.000 5.005


<r2> (average value of r2) Å2
<r2> 222.667
(<r2>)1/2 14.922