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 H3PO (Phosphine oxide)

using model chemistry: TPSSh/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/6-31G
 hartrees
Energy at 0K-418.246144
Energy at 298.15K-418.250463
HF Energy-418.246144
Nuclear repulsion energy61.158371
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 TPSSh/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2290 2203 153.21      
2 A1 1171 1126 127.59      
3 A1 928 893 19.24      
4 E 2261 2176 213.64      
4 E 2261 2176 213.69      
5 E 1064 1023 42.46      
5 E 1064 1023 42.45      
6 E 741 713 7.96      
6 E 741 713 7.96      

Unscaled Zero Point Vibrational Energy (zpe) 6260.3 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 6023.1 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 TPSSh/6-31G
ABC
3.39995 0.48801 0.48801

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.425
O2 0.000 0.000 -1.202
H3 0.000 1.281 1.081
H4 -1.109 -0.640 1.081
H5 1.109 -0.640 1.081

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.62651.43901.43901.4390
O21.62652.61752.61752.6175
H31.43902.61752.21802.2180
H41.43902.61752.21802.2180
H51.43902.61752.21802.2180

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 117.140 O2 P1 H4 117.140
O2 P1 H5 117.140 H3 P1 H4 100.829
H3 P1 H5 100.829 H4 P1 H5 100.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.723      
2 O -0.629      
3 H -0.031      
4 H -0.031      
5 H -0.031      


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 5.474 5.474
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.214 0.000 0.000
y 0.000 3.214 0.000
z 0.000 0.000 4.653


<r2> (average value of r2) Å2
<r2> 35.778
(<r2>)1/2 5.982