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

using model chemistry: MP4/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 MP4/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-417.854695
Energy at 298.15K-417.859236
HF Energy-417.400613
Nuclear repulsion energy65.397187
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 MP4/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 2455 2455        
2 A1 1241 1241        
3 A1 1141 1141        
4 E 2443 2443        
4 E 2443 2443        
5 E 1141 1141        
5 E 1140 1140        
6 E 839 839        
6 E 839 839        

Unscaled Zero Point Vibrational Energy (zpe) 6841.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6841.4 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 MP4/aug-cc-pV(T+d)Z
ABC
3.53253 0.57104 0.57104

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pV(T+d)Z

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.385
O2 0.000 0.000 -1.105
H3 0.000 1.256 1.022
H4 -1.088 -0.628 1.022
H5 1.088 -0.628 1.022

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.48991.40861.40861.4086
O21.48992.47032.47032.4703
H31.40862.47032.17602.1760
H41.40862.47032.17602.1760
H51.40862.47032.17602.1760

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 116.891 O2 P1 H4 116.891
O2 P1 H5 116.891 H3 P1 H4 101.136
H3 P1 H5 101.136 H4 P1 H5 101.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability