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

using model chemistry: CCSD(T)/cc-pVQZ

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-pVQZ
 hartrees
Energy at 0K-417.875810
Energy at 298.15K-417.880279
HF Energy-417.405283
Nuclear repulsion energy65.708396
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-pVQZ
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 2457 2383        
2 A1 1270 1232        
3 A1 1160 1125        
4 E 2443 2369        
4 E 2443 2369        
5 E 1140 1106        
5 E 1140 1105        
6 E 854 828        
6 E 853 827        

Unscaled Zero Point Vibrational Energy (zpe) 6879.1 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 6670.7 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-pVQZ
ABC
3.53009 0.57780 0.57780

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.382
O2 0.000 0.000 -1.098
H3 0.000 1.257 1.019
H4 -1.088 -0.628 1.019
H5 1.088 -0.628 1.019

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.47961.40891.40891.4089
O21.47962.46152.46152.4615
H31.40892.46152.17682.1768
H41.40892.46152.17682.1768
H51.40892.46152.17682.1768

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 116.876 O2 P1 H4 116.876
O2 P1 H5 116.876 H3 P1 H4 101.154
H3 P1 H5 101.154 H4 P1 H5 101.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability