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

using model chemistry: MP2=FULL/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=FULL/6-31G
 hartrees
Energy at 0K-417.365383
Energy at 298.15K-417.369755
HF Energy-417.155243
Nuclear repulsion energy61.281690
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=FULL/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 2205 152.14      
2 A1 1218 1157 181.48      
3 A1 991 942 49.98      
4 E 2304 2189 197.90      
4 E 2304 2189 197.90      
5 E 1074 1021 60.86      
5 E 1074 1021 60.86      
6 E 783 744 14.37      
6 E 783 744 14.37      

Unscaled Zero Point Vibrational Energy (zpe) 6426.2 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 6105.6 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=FULL/6-31G
ABC
3.39272 0.49053 0.49053

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 -1.198
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
P11.62251.43771.43771.4377
O21.62252.60992.60992.6099
H31.43772.60992.22042.2204
H41.43772.60992.22042.2204
H51.43772.60992.22042.2204

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 116.919 O2 P1 H4 116.918
O2 P1 H5 116.918 H3 P1 H4 101.102
H3 P1 H5 101.102 H4 P1 H5 101.102
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability