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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-413.284181
Energy at 298.15K-413.288381
HF Energy-413.284181
Nuclear repulsion energy62.464868
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/STO-3G
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 2578 2281 121.66      
2 A1 1335 1182 135.36      
3 A1 1011 894 5.63      
4 E 2514 2225 136.72      
4 E 2514 2225 136.72      
5 E 1233 1091 32.48      
5 E 1233 1091 32.48      
6 E 668 592 17.18      
6 E 668 592 17.18      

Unscaled Zero Point Vibrational Energy (zpe) 6877.1 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 6086.2 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 B3PW91/STO-3G
ABC
3.57924 0.51081 0.51081

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.404
O2 0.000 0.000 -1.174
H3 0.000 1.248 1.112
H4 -1.081 -0.624 1.112
H5 1.081 -0.624 1.112

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.57721.43521.43521.4352
O21.57722.60432.60432.6043
H31.43522.60432.16182.1618
H41.43522.60432.16182.1618
H51.43522.60432.16182.1618

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 119.585 O2 P1 H4 119.585
O2 P1 H5 119.585 H3 P1 H4 97.723
H3 P1 H5 97.723 H4 P1 H5 97.723
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.643      
2 O -0.420      
3 H -0.074      
4 H -0.074      
5 H -0.074      


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 2.670 2.670
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.470 0.000 0.000
y 0.000 -17.470 0.000
z 0.000 0.000 -20.301
Traceless
 xyz
x 1.415 0.000 0.000
y 0.000 1.415 0.000
z 0.000 0.000 -2.831
Polar
3z2-r2-5.662
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 1.603 0.000 0.000
y 0.000 1.603 0.000
z 0.000 0.000 2.741


<r2> (average value of r2) Å2
<r2> 33.347
(<r2>)1/2 5.775