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

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-415.508289
Energy at 298.15K-415.512796
HF Energy-415.264767
Nuclear repulsion energy65.233497
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 CCD/3-21G*
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 2514 2405 85.19      
2 A1 1360 1301 205.70      
3 A1 1213 1160 0.64      
4 E 2481 2373 139.90      
4 E 2481 2373 139.90      
5 E 1141 1091 57.17      
5 E 1141 1091 57.17      
6 E 915 875 41.82      
6 E 915 875 41.82      

Unscaled Zero Point Vibrational Energy (zpe) 7080.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 6772.2 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 CCD/3-21G*
ABC
3.58846 0.56649 0.56649

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.383
O2 0.000 0.000 -1.110
H3 0.000 1.246 1.047
H4 -1.079 -0.623 1.047
H5 1.079 -0.623 1.047

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49281.41241.41241.4124
O21.49282.49112.49112.4911
H31.41242.49112.15902.1590
H41.41242.49112.15902.1590
H51.41242.49112.15902.1590

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 118.047 O2 P1 H4 118.047
O2 P1 H5 118.047 H3 P1 H4 99.694
H3 P1 H5 99.694 H4 P1 H5 99.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability