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 PO (Phosphorus monoxide)

using model chemistry: wB97X-D/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π
Energy calculated at wB97X-D/aug-cc-pVDZ
 hartrees
Energy at 0K-416.511209
Energy at 298.15K-416.511318
HF Energy-416.511209
Nuclear repulsion energy 
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 wB97X-D/aug-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 Σ 1245 1192 61.70      

Unscaled Zero Point Vibrational Energy (zpe) 622.7 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 596.1 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 wB97X-D/aug-cc-pVDZ
B
0.70580

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 -0.981
P2 0.000 0.000 0.523

Atom - Atom Distances (Å)
  O1 P2
O11.5048
P21.5048

picture of Phosphorus monoxide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.540      
2 P 0.540      


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 2.069 2.069
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.093 0.000 0.000
y 0.000 -18.975 0.000
z 0.000 0.000 -19.556
Traceless
 xyz
x 3.173 0.000 0.000
y 0.000 -1.151 0.000
z 0.000 0.000 -2.022
Polar
3z2-r2-4.043
x2-y22.883
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.195 0.000 0.000
y 0.000 3.858 0.000
z 0.000 0.000 4.642


<r2> (average value of r2) Å2
<r2> 23.187
(<r2>)1/2 4.815