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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-417.642003
Energy at 298.15K-417.646475
HF Energy-417.320695
Nuclear repulsion energy64.534773
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/cc-pVDZ
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 2490 2372 88.17      
2 A1 1280 1219 195.75      
3 A1 1158 1103 0.36      
4 E 2471 2353 141.30      
4 E 2471 2353 141.30      
5 E 1158 1103 42.24      
5 E 1158 1103 42.24      
6 E 852 812 32.31      
6 E 852 812 32.31      

Unscaled Zero Point Vibrational Energy (zpe) 6945.1 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 6615.2 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/cc-pVDZ
ABC
3.53247 0.55361 0.55361

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.388
O2 0.000 0.000 -1.123
H3 0.000 1.256 1.055
H4 -1.088 -0.628 1.055
H5 1.088 -0.628 1.055

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.51161.42211.42211.4221
O21.51162.51442.51442.5144
H31.42212.51442.17602.1760
H41.42212.51442.17602.1760
H51.42212.51442.17602.1760

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 117.942 O2 P1 H4 117.942
O2 P1 H5 117.942 H3 P1 H4 99.825
H3 P1 H5 99.825 H4 P1 H5 99.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability