return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HOBr (Hypobromous acid)

using model chemistry: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-2644.486925
Energy at 298.15K-2644.490902
HF Energy-2644.486925
Nuclear repulsion energy95.114857
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 LSDA/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3708 3649 88.28      
2 A' 1145 1126 54.98      
3 A' 686 675 13.72      

Unscaled Zero Point Vibrational Energy (zpe) 2769.0 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 2724.7 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 LSDA/6-31G(2df,p)
ABC
20.06510 0.36710 0.36050

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.928 1.648 0.000
O2 0.022 1.424 0.000
Br3 0.022 -0.373 0.000

Atom - Atom Distances (Å)
  H1 O2 Br3
H10.97562.2329
O20.97561.7964
Br32.23291.7964

picture of Hypobromous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 Br3 103.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.352      
2 O -0.501      
3 Br 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.444 0.288 0.000 1.473
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.290 -3.024 0.000
y -3.024 -21.241 0.000
z 0.000 0.000 -24.553
Traceless
 xyz
x 0.607 -3.024 0.000
y -3.024 2.181 0.000
z 0.000 0.000 -2.787
Polar
3z2-r2-5.575
x2-y2-1.049
xy-3.024
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.199 -0.214 0.000
y -0.214 4.461 0.000
z 0.000 0.000 2.936


<r2> (average value of r2) Å2
<r2> 38.850
(<r2>)1/2 6.233