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All results from a given calculation for CH2Br2 (dibromomethane)

using model chemistry: TPSSh/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 TPSSh/daug-cc-pVTZ
 hartrees
Energy at 0K-5187.558123
Energy at 298.15K 
HF Energy-5187.558123
Nuclear repulsion energy350.040157
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 TPSSh/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 3130 3130 1.23 96.93 0.04 0.08
2 A1 1439 1439 0.06 10.25 0.51 0.68
3 A1 578 578 4.01 18.95 0.06 0.12
4 A1 166 166 0.10 3.89 0.33 0.49
5 A2 1109 1109 0.00 0.85 0.75 0.86
6 B1 3218 3218 2.36 45.29 0.75 0.86
7 B1 814 814 3.26 0.34 0.75 0.86
8 B2 1208 1208 66.29 0.23 0.75 0.86
9 B2 630 630 108.86 3.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6145.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6145.9 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 TPSSh/daug-cc-pVTZ
ABC
0.88192 0.04030 0.03883

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.934
H2 -0.901 0.000 1.533
H3 0.901 0.000 1.533
Br4 0.000 1.625 -0.124
Br5 0.000 -1.625 -0.124

Atom - Atom Distances (Å)
  C1 H2 H3 Br4 Br5
C11.08201.08201.93901.9390
H21.08201.80252.48952.4895
H31.08201.80252.48952.4895
Br41.93902.48952.48953.2494
Br51.93902.48952.48953.2494

picture of dibromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.797 H2 C1 Br4 107.581
H2 C1 Br5 107.581 H3 C1 Br4 107.581
H3 C1 Br5 107.581 Br4 C1 Br5 113.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.417      
2 H 0.340      
3 H 0.340      
4 Br -0.548      
5 Br -0.548      


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 1.503 1.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.988 0.000 0.000
y 0.000 11.631 0.000
z 0.000 0.000 7.658


<r2> (average value of r2) Å2
<r2> 224.198
(<r2>)1/2 14.973