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: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-29.319009
Energy at 298.15K-29.322994
HF Energy-29.319009
Nuclear repulsion energy16.704662
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 HF/CEP-121G
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' 3977 3629 85.10      
2 A' 1264 1154 25.91      
3 A' 670 612 2.20      

Unscaled Zero Point Vibrational Energy (zpe) 2955.9 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 2697.2 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 HF/CEP-121G
ABC
22.00243 0.33384 0.32885

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.888 1.793 0.000
O2 0.021 1.488 0.000
Br3 0.021 -0.391 0.000

Atom - Atom Distances (Å)
  H1 O2 Br3
H10.95892.3661
O20.95891.8791
Br32.36611.8791

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 108.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.394      
2 O -0.696      
3 Br 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.160 -0.524 0.000 2.222
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.624 -4.121 0.000
y -4.121 -19.045 0.000
z 0.000 0.000 -21.806
Traceless
 xyz
x 0.802 -4.121 0.000
y -4.121 1.670 0.000
z 0.000 0.000 -2.472
Polar
3z2-r2-4.943
x2-y2-0.578
xy-4.121
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.163 -0.302 0.000
y -0.302 4.873 0.000
z 0.000 0.000 0.690


<r2> (average value of r2) Å2
<r2> 30.953
(<r2>)1/2 5.564