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

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-417.653739
Energy at 298.15K-417.658219
HF Energy-417.317258
Nuclear repulsion energy65.170906
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 QCISD/6-31+G**
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 2524 2386 100.13      
2 A1 1283 1213 262.57      
3 A1 1167 1104 10.73      
4 E 2508 2371 123.89      
4 E 2508 2371 123.89      
5 E 1170 1106 46.91      
5 E 1170 1106 46.91      
6 E 866 819 30.30      
6 E 866 819 30.30      

Unscaled Zero Point Vibrational Energy (zpe) 7031.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 6647.3 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 QCISD/6-31+G**
ABC
3.56094 0.56518 0.56518

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

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 -1.112
H3 0.000 1.251 1.023
H4 -1.084 -0.626 1.023
H5 1.084 -0.626 1.023

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.49991.40331.40331.4033
O21.49992.47472.47472.4747
H31.40332.47472.16732.1673
H41.40332.47472.16732.1673
H51.40332.47472.16732.1673

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 116.910 O2 P1 H4 116.910
O2 P1 H5 116.910 H3 P1 H4 101.112
H3 P1 H5 101.112 H4 P1 H5 101.112
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability