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

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-412.440331
Energy at 298.15K-412.444544
HF Energy-412.352250
Nuclear repulsion energy62.897611
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/STO-3G
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 2698 2398 141.01      
2 A1 1394 1239 212.14      
3 A1 955 849 43.99      
4 E 2694 2395 114.79      
4 E 2694 2395 114.79      
5 E 1320 1174 53.96      
5 E 1320 1174 53.96      
6 E 671 597 20.72      
6 E 671 597 20.72      

Unscaled Zero Point Vibrational Energy (zpe) 7209.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 6408.5 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 MP2=FULL/STO-3G
ABC
3.66523 0.51657 0.51657

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.403
O2 0.000 0.000 -1.168
H3 0.000 1.233 1.101
H4 -1.068 -0.617 1.101
H5 1.068 -0.617 1.101

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.57041.41731.41731.4173
O21.57042.58232.58232.5823
H31.41732.58232.13632.1363
H41.41732.58232.13632.1363
H51.41732.58232.13632.1363

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 119.517 O2 P1 H4 119.517
O2 P1 H5 119.517 H3 P1 H4 97.810
H3 P1 H5 97.810 H4 P1 H5 97.810
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability