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

using model chemistry: CBS-Q

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 CBS-Q
 hartrees
Energy at 0K-417.839101
Energy at 298.15K-417.834818
HF Energy-417.309848
Nuclear repulsion energy62.219999
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 CBS-Q
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' 4116 4116 74.50      
2 A' 2560 2560 163.57      
3 A' 1282 1282 27.55      
4 A' 1221 1221 92.80      
5 A' 998 998 87.99      
6 A' 883 883 180.02      
7 A" 2548 2548 255.97      
8 A" 999 999 35.72      
9 A" 460 460 160.86      

Unscaled Zero Point Vibrational Energy (zpe) 7533.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7533.8 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 CBS-Q
ABC
3.72694 0.47883 0.47549

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.104 -0.565 0.000
O2 -0.104 1.079 0.000
H3 0.735 1.510 0.000
H4 0.824 -0.831 1.026
H5 0.824 -0.831 -1.026

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.64432.23891.40811.4081
O21.64430.94342.35802.3580
H32.23890.94342.55782.5578
H41.40812.35802.55782.0517
H51.40812.35802.55782.0517

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 117.215 O2 P1 H4 100.875
O2 P1 H5 100.875 H4 P1 H5 93.523
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-417.839265
Energy at 298.15K-417.843432
HF Energy-417.309748
Nuclear repulsion energy62.142132
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 CBS-Q
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' 4137 4137 117.61      
2 A' 2615 2615 133.62      
3 A' 1279 1279 43.34      
4 A' 1240 1240 204.43      
5 A' 1000 1000 34.81      
6 A' 873 873 138.51      
7 A" 2604 2604 192.31      
8 A" 1009 1009 7.51      
9 A" 292 292 142.29      

Unscaled Zero Point Vibrational Energy (zpe) 7524.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7524.4 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 CBS-Q
ABC
3.75791 0.47585 0.47307

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.038 -0.568 0.000
O2 0.038 1.084 0.000
H3 0.907 1.448 0.000
H4 -0.886 -0.798 1.027
H5 -0.886 -0.798 -1.027

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.65232.19531.40081.4008
O21.65230.94232.33532.3353
H32.19530.94233.05233.0523
H41.40082.33533.05232.0546
H51.40082.33533.05232.0546

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 112.693 O2 P1 H4 99.459
O2 P1 H5 99.459 H4 P1 H5 94.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability