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: HSEh1PBE/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 HSEh1PBE/STO-3G
 hartrees
Energy at 0K-413.246849
Energy at 298.15K-413.250897
HF Energy-413.246849
Nuclear repulsion energy59.588322
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 HSEh1PBE/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' 3758 3319 43.18      
2 A' 2714 2396 58.77      
3 A' 1402 1238 41.26      
4 A' 1390 1227 1.99      
5 A' 1019 900 49.62      
6 A' 823 727 19.61      
7 A" 2755 2433 82.48      
8 A" 999 882 21.65      
9 A" 392 346 52.46      

Unscaled Zero Point Vibrational Energy (zpe) 7625.2 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 6733.8 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 HSEh1PBE/STO-3G
ABC
3.51109 0.45230 0.44406

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.113 -0.597 0.000
O2 -0.113 1.145 0.000
H3 0.879 1.390 0.000
H4 0.865 -0.796 1.010
H5 0.865 -0.796 -1.010

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.74162.22101.42011.4201
O21.74161.02262.39632.3963
H32.22101.02262.40752.4075
H41.42012.39632.40752.0194
H51.42012.39632.40752.0194

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 103.871 O2 P1 H4 98.044
O2 P1 H5 98.044 H4 P1 H5 90.628
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.382      
2 O -0.339      
3 H 0.151      
4 H -0.097      
5 H -0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.675 -0.393 0.000 1.721
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.319 1.122 0.000
y 1.122 -18.690 0.000
z 0.000 0.000 -17.712
Traceless
 xyz
x 0.882 1.122 0.000
y 1.122 -1.174 0.000
z 0.000 0.000 0.292
Polar
3z2-r20.584
x2-y21.371
xy1.122
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.586 -0.099 0.000
y -0.099 2.209 0.000
z 0.000 0.000 1.571


<r2> (average value of r2) Å2
<r2> 34.815
(<r2>)1/2 5.900

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-413.252219
Energy at 298.15K-413.256015
HF Energy-413.252219
Nuclear repulsion energy59.605790
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 HSEh1PBE/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' 3795 3351 34.54      
2 A' 2742 2422 47.03      
3 A' 1415 1250 49.07      
4 A' 1391 1228 31.21      
5 A' 1030 909 15.97      
6 A' 851 752 15.78      
7 A" 2777 2453 61.00      
8 A" 1042 920 15.88      
9 A" 165 146 52.42      

Unscaled Zero Point Vibrational Energy (zpe) 7603.9 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 6715.0 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 HSEh1PBE/STO-3G
ABC
3.54093 0.45205 0.44442

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.037 -0.602 0.000
O2 0.037 1.143 0.000
H3 1.037 1.344 0.000
H4 -0.947 -0.730 1.011
H5 -0.947 -0.730 -1.011

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.74442.18771.41691.4169
O21.74441.02002.34462.3446
H32.18771.02003.04313.0431
H41.41692.34463.04312.0220
H51.41692.34463.04312.0220

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 101.389 O2 P1 H4 95.181
O2 P1 H5 95.181 H4 P1 H5 91.044
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.358      
2 O -0.340      
3 H 0.157      
4 H -0.087      
5 H -0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.677 -0.418 0.000 0.796
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.734 2.287 0.000
y 2.287 -18.753 0.000
z 0.000 0.000 -17.644
Traceless
 xyz
x 1.464 2.287 0.000
y 2.287 -1.564 0.000
z 0.000 0.000 0.100
Polar
3z2-r20.200
x2-y22.019
xy2.287
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.811 0.765 0.000
y 0.765 2.146 0.000
z 0.000 0.000 1.531


<r2> (average value of r2) Å2
<r2> 34.757
(<r2>)1/2 5.895