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All results from a given calculation for H3PO (Phosphine oxide)

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 C3V 1A1
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-23.774157
Energy at 298.15K-23.778673
HF Energy-23.774157
Nuclear repulsion energy20.911021
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 A1 2571 2322 75.39      
2 A1 1312 1185 288.40      
3 A1 1223 1105 2.05      
4 E 2565 2317 125.02      
4 E 2565 2317 125.02      
5 E 1205 1089 51.56      
5 E 1205 1089 51.56      
6 E 908 821 47.74      
6 E 908 821 47.74      

Unscaled Zero Point Vibrational Energy (zpe) 7231.8 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 6533.2 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
3.48610 0.57563 0.57563

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.383
O2 0.000 0.000 -1.100
H3 0.000 1.265 1.015
H4 -1.095 -0.632 1.015
H5 1.095 -0.632 1.015

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48311.41351.41351.4135
O21.48312.46372.46372.4637
H31.41352.46372.19052.1905
H41.41352.46372.19052.1905
H51.41352.46372.19052.1905

picture of Phosphine oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 P1 H3 116.529 O2 P1 H4 116.529
O2 P1 H5 116.529 H3 P1 H4 101.581
H3 P1 H5 101.581 H4 P1 H5 101.582
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 P 0.582      
2 O -0.603      
3 H 0.007      
4 H 0.007      
5 H 0.007      


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 4.321 4.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.904 0.000 0.000
y 0.000 -17.904 0.000
z 0.000 0.000 -21.969
Traceless
 xyz
x 2.033 0.000 0.000
y 0.000 2.033 0.000
z 0.000 0.000 -4.065
Polar
3z2-r2-8.131
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 3.139 0.000 0.000
y 0.000 3.139 0.000
z 0.000 0.000 3.626


<r2> (average value of r2) Å2
<r2> 27.906
(<r2>)1/2 5.283