return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2POH (Phosphinous acid)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS trans 1A1'
1 2 yes CS cis 1A1'

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-417.690874
Energy at 298.15K-417.694986
HF Energy-417.340953
Nuclear repulsion energy60.535022
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)/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 A' 3825 3646        
2 A' 2347 2237        
3 A' 1155 1101        
4 A' 1129 1076        
5 A' 909 866        
6 A' 786 750        
7 A" 2350 2240        
8 A" 907 865        
9 A" 419 399        

Unscaled Zero Point Vibrational Energy (zpe) 6914.1 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 6589.8 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)/cc-pVDZ
ABC
3.59691 0.46628 0.46142

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.109 -0.579 0.000
O2 -0.109 1.118 0.000
H3 0.797 1.460 0.000
H4 0.855 -0.855 1.033
H5 0.855 -0.855 -1.033

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.69702.23181.43991.4399
O21.69700.96842.42672.4267
H32.23180.96842.53632.5363
H41.43992.42672.53632.0670
H51.43992.42672.53632.0670

picture of Phosphinous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 O2 H3 110.725 O2 P1 H4 101.039
O2 P1 H5 101.039 H4 P1 H5 91.734
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-417.691173
Energy at 298.15K-417.695090
HF Energy-417.340346
Nuclear repulsion energy60.427386
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)/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 A' 3848 3667        
2 A' 2388 2276        
3 A' 1171 1116        
4 A' 1154 1100        
5 A' 911 869        
6 A' 777 741        
7 A" 2387 2275        
8 A" 926 882        
9 A" 242 231        

Unscaled Zero Point Vibrational Energy (zpe) 6902.3 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 6578.5 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)/cc-pVDZ
ABC
3.62355 0.46344 0.45909

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.039 -0.585 0.000
O2 0.039 1.123 0.000
H3 0.971 1.381 0.000
H4 -0.932 -0.794 1.034
H5 -0.932 -0.794 -1.034

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.70802.17611.43361.4336
O21.70800.96732.38492.3849
H32.17610.96733.06993.0699
H41.43362.38493.06992.0674
H51.43362.38493.06992.0674

picture of Phosphinous acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 O2 H3 105.493 O2 P1 H4 98.396
O2 P1 H5 98.396 H4 P1 H5 92.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability