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

using model chemistry: QCISD(T)/aug-cc-pVDZ

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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-417.715477
Energy at 298.15K-417.719902
HF Energy-417.336634
Nuclear repulsion energy63.919914
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(T)/aug-cc-pVDZ
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 2427 2373        
2 A1 1183 1157        
3 A1 1092 1068        
4 E 2422 2368        
4 E 2421 2368        
5 E 1117 1092        
5 E 1117 1092        
6 E 811 793        
6 E 810 792        

Unscaled Zero Point Vibrational Energy (zpe) 6699.8 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 6551.1 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(T)/aug-cc-pVDZ
ABC
3.43331 0.54328 0.54328

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.397
O2 0.000 0.000 -1.134
H3 0.000 1.274 1.040
H4 -1.104 -0.637 1.040
H5 1.104 -0.637 1.040

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.53101.42731.42731.4273
O21.53102.51982.51982.5198
H31.42732.51982.20722.2072
H41.42732.51982.20722.2072
H51.42732.51982.20722.2072

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 116.766 O2 P1 H4 116.766
O2 P1 H5 116.766 H3 P1 H4 101.290
H3 P1 H5 101.290 H4 P1 H5 101.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability