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

using model chemistry: B3PW91/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 B3PW91/STO-3G
 hartrees
Energy at 0K-413.367759
Energy at 298.15K-413.371798
HF Energy-413.367759
Nuclear repulsion energy59.416410
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 B3PW91/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' 3706 3280 46.04      
2 A' 2686 2377 61.67      
3 A' 1396 1236 41.47      
4 A' 1378 1220 1.84      
5 A' 1012 896 49.35      
6 A' 810 717 19.36      
7 A" 2726 2413 86.17      
8 A" 991 877 20.49      
9 A" 392 347 51.84      

Unscaled Zero Point Vibrational Energy (zpe) 7548.6 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 6680.5 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 B3PW91/STO-3G
ABC
3.49428 0.44965 0.44133

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.114 -0.599 0.000
O2 -0.114 1.148 0.000
H3 0.883 1.392 0.000
H4 0.868 -0.799 1.011
H5 0.868 -0.799 -1.011

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.74702.22671.42301.4230
O21.74701.02642.40322.4032
H32.22671.02642.41272.4127
H41.42302.40322.41272.0213
H51.42302.40322.41272.0213

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 103.751 O2 P1 H4 98.071
O2 P1 H5 98.071 H4 P1 H5 90.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.382      
2 O -0.335      
3 H 0.150      
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
  1.648 -0.385 0.000 1.693
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.326 1.132 0.000
y 1.132 -18.676 0.000
z 0.000 0.000 -17.733
Traceless
 xyz
x 0.878 1.132 0.000
y 1.132 -1.146 0.000
z 0.000 0.000 0.268
Polar
3z2-r20.537
x2-y21.350
xy1.132
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.601 -0.099 0.000
y -0.099 2.235 0.000
z 0.000 0.000 1.579


<r2> (average value of r2) Å2
<r2> 34.954
(<r2>)1/2 5.912

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-413.373138
Energy at 298.15K-413.376931
HF Energy-413.373138
Nuclear repulsion energy59.439079
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 B3PW91/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' 3744 3314 36.99      
2 A' 2714 2402 49.82      
3 A' 1404 1243 49.04      
4 A' 1385 1226 31.39      
5 A' 1025 907 15.63      
6 A' 838 741 15.95      
7 A" 2749 2433 64.01      
8 A" 1036 917 15.20      
9 A" 168 149 50.60      

Unscaled Zero Point Vibrational Energy (zpe) 7531.5 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 6665.4 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 B3PW91/STO-3G
ABC
3.52361 0.44952 0.44177

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.037 -0.604 0.000
O2 0.037 1.146 0.000
H3 1.042 1.346 0.000
H4 -0.950 -0.731 1.012
H5 -0.950 -0.731 -1.012

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.74982.19271.41981.4198
O21.74981.02382.35042.3504
H32.19271.02383.05053.0505
H41.41982.35043.05052.0236
H51.41982.35043.05052.0236

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 101.237 O2 P1 H4 95.165
O2 P1 H5 95.165 H4 P1 H5 90.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.358      
2 O -0.337      
3 H 0.156      
4 H -0.089      
5 H -0.089      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.688 -0.412 0.000 0.802
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.746 2.259 0.000
y 2.259 -18.740 0.000
z 0.000 0.000 -17.665
Traceless
 xyz
x 1.456 2.259 0.000
y 2.259 -1.534 0.000
z 0.000 0.000 0.078
Polar
3z2-r20.156
x2-y21.994
xy2.259
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.828 0.770 0.000
y 0.770 2.167 0.000
z 0.000 0.000 1.537


<r2> (average value of r2) Å2
<r2> 34.892
(<r2>)1/2 5.907