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: CCD/aug-cc-pV(T+d)Z

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/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-417.830303
Energy at 298.15K-417.834867
HF Energy-417.402062
Nuclear repulsion energy65.970319
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/aug-cc-pV(T+d)Z
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2487 2487 66.80      
2 A1 1292 1292 197.15      
3 A1 1182 1182 2.69      
4 E 2475 2475 71.96      
4 E 2475 2475 71.96      
5 E 1159 1159 25.01      
5 E 1159 1159 25.01      
6 E 868 868 26.93      
6 E 868 868 26.93      

Unscaled Zero Point Vibrational Energy (zpe) 6981.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6981.6 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/aug-cc-pV(T+d)Z
ABC
3.54073 0.58294 0.58294

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pV(T+d)Z

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.380
O2 0.000 0.000 -1.093
H3 0.000 1.255 1.012
H4 -1.087 -0.627 1.012
H5 1.087 -0.627 1.012

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47311.40501.40501.4050
O21.47312.45062.45062.4506
H31.40502.45062.17352.1735
H41.40502.45062.17352.1735
H51.40502.45062.17352.1735

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 116.727 O2 P1 H4 116.727
O2 P1 H5 116.727 H3 P1 H4 101.339
H3 P1 H5 101.339 H4 P1 H5 101.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability