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 PO2 (Phosphorus dioxide)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-491.675578
Energy at 298.15K-491.676710
Nuclear repulsion energy96.596042
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 B3PW91/cc-pVDZ
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 1034 998 3.78      
2 A1 377 363 26.44      
3 B2 1247 1203 68.94      

Unscaled Zero Point Vibrational Energy (zpe) 1328.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 1282.4 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 B3PW91/cc-pVDZ
ABC
2.90491 0.27731 0.25314

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.313
O2 0.000 1.379 -0.294
O3 0.000 -1.379 -0.294

Atom - Atom Distances (Å)
  P1 O2 O3
P11.50631.5063
O21.50632.7570
O31.50632.7570

picture of Phosphorus dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 P1 O3 132.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.671      
2 O -0.336      
3 O -0.336      


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 1.429 1.429
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.491 0.000 0.000
y 0.000 -27.850 0.000
z 0.000 0.000 -21.330
Traceless
 xyz
x 4.099 0.000 0.000
y 0.000 -6.940 0.000
z 0.000 0.000 2.841
Polar
3z2-r25.681
x2-y27.359
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000