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

using model chemistry: CCSD(T)/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(T)/cc-pV(T+d)Z
 hartrees
Energy at 0K-417.838391
Energy at 298.15K-417.842869
HF Energy-417.398253
Nuclear repulsion energy65.798172
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(T)/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 2455 2369        
2 A1 1289 1244        
3 A1 1172 1131        
4 E 2439 2353        
4 E 2438 2353        
5 E 1148 1107        
5 E 1147 1107        
6 E 859 828        
6 E 858 828        

Unscaled Zero Point Vibrational Energy (zpe) 6902.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6660.9 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(T)/cc-pV(T+d)Z
ABC
3.55050 0.57921 0.57921

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 -1.097
H3 0.000 1.253 1.023
H4 -1.085 -0.627 1.023
H5 1.085 -0.627 1.023

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47671.40851.40851.4085
O21.47672.46252.46252.4625
H31.40852.46252.17052.1705
H41.40852.46252.17052.1705
H51.40852.46252.17052.1705

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 117.168 O2 P1 H4 117.168
O2 P1 H5 117.168 H3 P1 H4 100.794
H3 P1 H5 100.794 H4 P1 H5 100.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability