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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/daug-cc-pVTZ
 hartrees
Energy at 0K-5187.043219
Energy at 298.15K 
HF Energy-5187.043219
Nuclear repulsion energy352.305314
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/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 3145 3145 0.87 96.40 0.04 0.08
2 A1 1433 1433 0.05 9.97 0.52 0.68
3 A1 596 596 3.38 17.86 0.06 0.12
4 A1 172 172 0.08 3.43 0.32 0.49
5 A2 1120 1120 0.00 0.86 0.75 0.86
6 B1 3230 3230 3.28 44.01 0.75 0.86
7 B1 820 820 3.83 0.29 0.75 0.86
8 B2 1216 1216 58.34 0.26 0.75 0.86
9 B2 664 664 94.34 3.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6198.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6198.1 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/daug-cc-pVTZ
ABC
0.89026 0.04086 0.03936

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.928
H2 -0.898 0.000 1.533
H3 0.898 0.000 1.533
Br4 0.000 1.614 -0.123
Br5 0.000 -1.614 -0.123

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08251.08251.92581.9258
H21.08251.79532.48052.4805
H31.08251.79532.48052.4805
Br41.92582.48052.48053.2272
Br51.92582.48052.48053.2272

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.036 H2 C1 Br4 107.765
H2 C1 Br5 107.765 H3 C1 Br4 107.765
H3 C1 Br5 107.765 Br4 C1 Br5 113.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.142      
2 H 0.359      
3 H 0.359      
4 Br -0.289      
5 Br -0.289      


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 1.480 1.480
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.219 0.000 0.000
y 0.000 -44.734 0.000
z 0.000 0.000 -40.834
Traceless
 xyz
x -0.435 0.000 0.000
y 0.000 -2.708 0.000
z 0.000 0.000 3.143
Polar
3z2-r26.285
x2-y21.515
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.964 0.000 0.000
y 0.000 11.415 0.000
z 0.000 0.000 7.620


<r2> (average value of r2) Å2
<r2> 221.610
(<r2>)1/2 14.887