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: BLYP/STO-3G

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 BLYP/STO-3G
 hartrees
Energy at 0K-413.356617
Energy at 298.15K-413.360601
HF Energy-413.356617
Nuclear repulsion energy58.470289
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 BLYP/STO-3G
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' 3448 3190 61.99      
2 A' 2526 2337 83.42      
3 A' 1359 1258 43.05      
4 A' 1326 1227 1.77      
5 A' 966 894 46.56      
6 A' 748 692 19.72      
7 A" 2563 2371 112.31      
8 A" 937 867 14.44      
9 A" 392 363 47.07      

Unscaled Zero Point Vibrational Energy (zpe) 7132.5 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 6599.0 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 BLYP/STO-3G
ABC
3.39105 0.43566 0.42674

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.116 -0.609 0.000
O2 -0.116 1.168 0.000
H3 0.905 1.403 0.000
H4 0.886 -0.810 1.016
H5 0.886 -0.810 -1.016

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.77702.25651.44141.4414
O21.77701.04842.43952.4395
H32.25651.04842.43552.4355
H41.44142.43952.43552.0323
H51.44142.43952.43552.0323

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 102.947 O2 P1 H4 98.034
O2 P1 H5 98.034 H4 P1 H5 89.655
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.383      
2 O -0.302      
3 H 0.134      
4 H -0.108      
5 H -0.108      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.417 -0.340 0.000 1.458
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.413 1.160 0.000
y 1.160 -18.602 0.000
z 0.000 0.000 -17.880
Traceless
 xyz
x 0.828 1.160 0.000
y 1.160 -0.955 0.000
z 0.000 0.000 0.127
Polar
3z2-r20.255
x2-y21.189
xy1.160
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.692 -0.093 0.000
y -0.093 2.383 0.000
z 0.000 0.000 1.616


<r2> (average value of r2) Å2
<r2> 35.745
(<r2>)1/2 5.979

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-413.361695
Energy at 298.15K-413.365414
HF Energy-413.361695
Nuclear repulsion energy58.523139
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 BLYP/STO-3G
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' 3492 3230 52.38      
2 A' 2560 2369 72.51      
3 A' 1361 1259 40.87      
4 A' 1351 1250 38.42      
5 A' 986 912 14.99      
6 A' 778 719 16.60      
7 A" 2591 2397 86.55      
8 A" 993 918 10.92      
9 A" 149 138 37.12      

Unscaled Zero Point Vibrational Energy (zpe) 7129.6 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 6596.3 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 BLYP/STO-3G
ABC
3.41744 0.43610 0.42764

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.038 -0.614 0.000
O2 0.038 1.166 0.000
H3 1.066 1.351 0.000
H4 -0.971 -0.733 1.017
H5 -0.971 -0.733 -1.017

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.77952.21821.43721.4372
O21.77951.04512.37852.3785
H32.21821.04513.08713.0871
H41.43722.37853.08712.0336
H51.43722.37853.08712.0336

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 100.249 O2 P1 H4 94.766
O2 P1 H5 94.766 H4 P1 H5 90.060
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.362      
2 O -0.304      
3 H 0.139      
4 H -0.099      
5 H -0.099      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.748 -0.379 0.000 0.839
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.881 2.014 0.000
y 2.014 -18.664 0.000
z 0.000 0.000 -17.816
Traceless
 xyz
x 1.359 2.014 0.000
y 2.014 -1.315 0.000
z 0.000 0.000 -0.044
Polar
3z2-r2-0.087
x2-y21.783
xy2.014
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.935 0.794 0.000
y 0.794 2.288 0.000
z 0.000 0.000 1.570


<r2> (average value of r2) Å2
<r2> 35.656
(<r2>)1/2 5.971