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

using model chemistry: MP2/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/Def2TZVPP
 hartrees
Energy at 0K-417.802116
Energy at 298.15K-417.806599
HF Energy-417.396539
Nuclear repulsion energy65.732871
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 MP2/Def2TZVPP
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 2389 70.49      
2 A1 1288 1225 182.14      
3 A1 1179 1122 0.65      
4 E 2496 2375 91.51      
4 E 2496 2375 91.51      
5 E 1166 1109 29.98      
5 E 1166 1109 29.98      
6 E 865 823 27.72      
6 E 865 823 27.72      

Unscaled Zero Point Vibrational Energy (zpe) 7015.6 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 6675.3 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 MP2/Def2TZVPP
ABC
3.56850 0.57704 0.57704

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.381
O2 0.000 0.000 -1.097
H3 0.000 1.251 1.019
H4 -1.083 -0.625 1.019
H5 1.083 -0.625 1.019

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47761.40391.40391.4039
O21.47762.45732.45732.4573
H31.40392.45732.16652.1665
H41.40392.45732.16652.1665
H51.40392.45732.16652.1665

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 117.008 O2 P1 H4 117.008
O2 P1 H5 117.008 H3 P1 H4 100.992
H3 P1 H5 100.992 H4 P1 H5 100.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability