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

using model chemistry: QCISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-417.814268
Energy at 298.15K-417.818749
HF Energy-417.388497
Nuclear repulsion energy65.614613
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 QCISD/cc-pVTZ
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 2472 2362 68.38      
2 A1 1284 1227 173.06      
3 A1 1175 1123 1.61      
4 E 2455 2346 97.32      
4 E 2455 2346 97.32      
5 E 1154 1102 30.28      
5 E 1154 1102 30.28      
6 E 862 823 28.95      
6 E 862 823 28.95      

Unscaled Zero Point Vibrational Energy (zpe) 6934.9 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 6626.3 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 QCISD/cc-pVTZ
ABC
3.53596 0.57569 0.57569

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

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 -1.100
H3 0.000 1.256 1.023
H4 -1.087 -0.628 1.023
H5 1.087 -0.628 1.023

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48211.40981.40981.4098
O21.48212.46662.46662.4666
H31.40982.46662.17502.1750
H41.40982.46662.17502.1750
H51.40982.46662.17502.1750

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 117.038 O2 P1 H4 117.038
O2 P1 H5 117.038 H3 P1 H4 100.955
H3 P1 H5 100.955 H4 P1 H5 100.955
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability