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 PPO (Phosphorus oxide phosphide)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-28.339197
Energy at 298.15K-28.340368
HF Energy-28.339197
Nuclear repulsion energy22.603963
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-31G*
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 1374 1234 298.48      
2 Σ 742 667 1.16      
3 Π 224 201 6.23      
3 Π 224 201 6.23      

Unscaled Zero Point Vibrational Energy (zpe) 1281.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 1151.1 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 HF/CEP-31G*
B
0.13096

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 1.450
P2 0.000 0.000 -0.437
O3 0.000 0.000 -1.900

Atom - Atom Distances (Å)
  P1 P2 O3
P11.88653.3495
P21.88651.4629
O33.34951.4629

picture of Phosphorus oxide phosphide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 P2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.005      
2 P 0.384      
3 O -0.389      


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 1.888 1.888
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.759 0.000 0.000
y 0.000 -28.759 0.000
z 0.000 0.000 -33.916
Traceless
 xyz
x 2.579 0.000 0.000
y 0.000 2.579 0.000
z 0.000 0.000 -5.158
Polar
3z2-r2-10.315
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.594 0.000 0.000
y 0.000 3.594 0.000
z 0.000 0.000 10.888


<r2> (average value of r2) Å2
<r2> 52.151
(<r2>)1/2 7.222