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

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-417.359647
Energy at 298.15K-417.363972
HF Energy-417.155295
Nuclear repulsion energy60.943845
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 CISD/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 2343 2197 107.83      
2 A1 1191 1117 148.49      
3 A1 896 841 15.87      
4 E 2322 2178 162.84      
4 E 2322 2178 162.84      
5 E 1080 1013 49.01      
5 E 1080 1013 49.01      
6 E 748 702 13.72      
6 E 748 702 13.72      

Unscaled Zero Point Vibrational Energy (zpe) 6365.5 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 5969.5 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 CISD/6-31G
ABC
3.38715 0.48357 0.48357

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.430
O2 0.000 0.000 -1.208
H3 0.000 1.283 1.073
H4 -1.111 -0.642 1.073
H5 1.111 -0.642 1.073

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.63731.43531.43531.4353
O21.63732.61682.61682.6168
H31.43532.61682.22222.2222
H41.43532.61682.22222.2222
H51.43532.61682.22222.2222

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 116.632 O2 P1 H4 116.632
O2 P1 H5 116.632 H3 P1 H4 101.454
H3 P1 H5 101.454 H4 P1 H5 101.454
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability