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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-417.360595
Energy at 298.15K-417.364967
HF Energy-417.155251
Nuclear repulsion energy61.277556
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 MP2/6-31G
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 2321 2221 151.94      
2 A1 1218 1165 180.51      
3 A1 990 948 50.33      
4 E 2305 2205 197.53      
4 E 2305 2205 197.53      
5 E 1074 1028 60.62      
5 E 1074 1028 60.62      
6 E 783 749 14.20      
6 E 783 749 14.20      

Unscaled Zero Point Vibrational Energy (zpe) 6426.4 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 6148.8 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 MP2/6-31G
ABC
3.39287 0.49043 0.49043

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.424
O2 0.000 0.000 -1.199
H3 0.000 1.282 1.075
H4 -1.110 -0.641 1.075
H5 1.110 -0.641 1.075

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.62271.43761.43761.4376
O21.62272.61002.61002.6100
H31.43762.61002.22042.2204
H41.43762.61002.22042.2204
H51.43762.61002.22042.2204

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 116.913 O2 P1 H4 116.913
O2 P1 H5 116.913 H3 P1 H4 101.109
H3 P1 H5 101.109 H4 P1 H5 101.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability