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: CCSD=FULL/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 CCSD=FULL/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-417.958618
Energy at 298.15K-417.963181
HF Energy-417.402213
Nuclear repulsion energy66.093012
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 CCSD=FULL/aug-cc-pV(T+d)Z
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 2490 2490 67.44      
2 A1 1285 1285 187.63      
3 A1 1175 1175 3.45      
4 E 2473 2473 73.00      
4 E 2473 2473 73.00      
5 E 1166 1166 24.30      
5 E 1166 1166 24.31      
6 E 864 864 26.30      
6 E 864 864 26.29      

Unscaled Zero Point Vibrational Energy (zpe) 6977.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6977.8 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 CCSD=FULL/aug-cc-pV(T+d)Z
ABC
3.57529 0.58446 0.58446

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/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 -1.092
H3 0.000 1.249 1.013
H4 -1.081 -0.624 1.013
H5 1.081 -0.624 1.013

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47121.40021.40021.4002
O21.47122.44722.44722.4472
H31.40022.44722.16302.1630
H41.40022.44722.16302.1630
H51.40022.44722.16302.1630

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 116.894 O2 P1 H4 116.894
O2 P1 H5 116.894 H3 P1 H4 101.133
H3 P1 H5 101.133 H4 P1 H5 101.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability