return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/aug-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=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-417.695158
Energy at 298.15K-417.699604
HF Energy-417.337144
Nuclear repulsion energy64.103618
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/aug-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 2491 2414 85.75      
2 A1 1209 1172 170.45      
3 A1 1122 1088 11.33      
4 E 2488 2411 77.92      
4 E 2488 2411 77.92      
5 E 1143 1108 22.50      
5 E 1143 1108 22.50      
6 E 824 799 19.05      
6 E 824 799 19.05      

Unscaled Zero Point Vibrational Energy (zpe) 6865.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 6654.3 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 MP2=FULL/aug-cc-pVDZ
ABC
3.46926 0.54581 0.54581

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.396
O2 0.000 0.000 -1.132
H3 0.000 1.268 1.036
H4 -1.098 -0.634 1.036
H5 1.098 -0.634 1.036

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.52821.42001.42001.4200
O21.52822.51142.51142.5114
H31.42002.51142.19582.1958
H41.42002.51142.19582.1958
H51.42002.51142.19582.1958

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 116.776 O2 P1 H4 116.776
O2 P1 H5 116.776 H3 P1 H4 101.277
H3 P1 H5 101.277 H4 P1 H5 101.277
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability