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

using model chemistry: MP3=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3=FULL/TZVP
 hartrees
Energy at 0K-417.755322
Energy at 298.15K-417.759805
HF Energy-417.360575
Nuclear repulsion energy65.417668
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 MP3=FULL/TZVP
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 2511 2345 76.76      
2 A1 1284 1199 264.66      
3 A1 1194 1115 0.02      
4 E 2493 2328 114.48      
4 E 2493 2328 114.48      
5 E 1182 1104 41.05      
5 E 1182 1104 41.05      
6 E 854 797 38.79      
6 E 854 797 38.79      

Unscaled Zero Point Vibrational Energy (zpe) 7023.7 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 6558.0 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 MP3=FULL/TZVP
ABC
3.54987 0.57104 0.57104

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.384
O2 0.000 0.000 -1.105
H3 0.000 1.253 1.026
H4 -1.085 -0.627 1.026
H5 1.085 -0.627 1.026

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48931.40811.40811.4081
O21.48932.47252.47252.4725
H31.40812.47252.17072.1707
H41.40812.47252.17072.1707
H51.40812.47252.17072.1707

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 117.126 O2 P1 H4 117.126
O2 P1 H5 117.126 H3 P1 H4 100.846
H3 P1 H5 100.846 H4 P1 H5 100.846
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability