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

using model chemistry: PBE1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/3-21G*
 hartrees
Energy at 0K-2636.980988
Energy at 298.15K-2636.984964
HF Energy-2636.980988
Nuclear repulsion energy92.061517
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 PBE1PBE/3-21G*
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' 3478 3338 24.87      
2 A' 1203 1155 51.23      
3 A' 674 647 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 2677.3 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 2569.7 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 PBE1PBE/3-21G*
ABC
18.98283 0.34355 0.33744

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.953 1.689 0.000
O2 0.022 1.473 0.000
Br3 0.022 -0.385 0.000

Atom - Atom Distances (Å)
  H1 O2 Br3
H10.99902.2915
O20.99901.8581
Br32.29151.8581

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 102.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.382      
2 O -0.484      
3 Br 0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.770 -0.044 0.000 1.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.094 -3.417 0.000
y -3.417 -21.210 0.000
z 0.000 0.000 -24.239
Traceless
 xyz
x 0.630 -3.417 0.000
y -3.417 1.957 0.000
z 0.000 0.000 -2.587
Polar
3z2-r2-5.174
x2-y2-0.884
xy-3.417
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.123 -0.316 0.000
y -0.316 3.874 0.000
z 0.000 0.000 1.576


<r2> (average value of r2) Å2
<r2> 40.392
(<r2>)1/2 6.355