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

using model chemistry: B3PW91/3-21G

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 B3PW91/3-21G
 hartrees
Energy at 0K-416.111795
Energy at 298.15K-416.115874
HF Energy-416.111795
Nuclear repulsion energy59.218857
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 B3PW91/3-21G
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' 3500 3364 3.40      
2 A' 2134 2052 150.01      
3 A' 1191 1144 5.18      
4 A' 1126 1082 87.01      
5 A' 893 858 59.72      
6 A' 744 715 68.00      
7 A" 2141 2058 214.56      
8 A" 853 820 18.79      
9 A" 422 406 143.35      

Unscaled Zero Point Vibrational Energy (zpe) 6502.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 6249.7 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 B3PW91/3-21G
ABC
3.54531 0.44363 0.44004

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.109 -0.590 0.000
O2 -0.109 1.143 0.000
H3 0.801 1.544 0.000
H4 0.853 -0.914 1.050
H5 0.853 -0.914 -1.050

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.73332.32001.46041.4604
O21.73330.99422.50202.5020
H32.32000.99422.67352.6735
H41.46042.50202.67352.1000
H51.46042.50202.67352.1000

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 113.783 O2 P1 H4 102.816
O2 P1 H5 102.816 H4 P1 H5 91.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.407      
2 O -0.670      
3 H 0.365      
4 H -0.051      
5 H -0.051      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.732 -0.067 0.000 2.733
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.567 1.713 0.000
y 1.713 -20.171 0.000
z 0.000 0.000 -20.287
Traceless
 xyz
x -0.338 1.713 0.000
y 1.713 0.256 0.000
z 0.000 0.000 0.082
Polar
3z2-r20.164
x2-y2-0.396
xy1.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.983 -0.408 0.000
y -0.408 3.750 0.000
z 0.000 0.000 3.338


<r2> (average value of r2) Å2
<r2> 37.012
(<r2>)1/2 6.084

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-416.115221
Energy at 298.15K-416.119095
HF Energy-416.115221
Nuclear repulsion energy59.129382
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 B3PW91/3-21G
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' 3549 3411 31.55      
2 A' 2219 2133 111.52      
3 A' 1194 1148 118.64      
4 A' 1157 1112 26.41      
5 A' 896 861 22.35      
6 A' 744 715 48.22      
7 A" 2221 2135 155.26      
8 A" 907 872 1.05      
9 A" 227 218 118.32      

Unscaled Zero Point Vibrational Energy (zpe) 6556.7 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 6302.3 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 B3PW91/3-21G
ABC
3.57126 0.44075 0.43733

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.038 -0.599 0.000
O2 0.038 1.150 0.000
H3 0.984 1.449 0.000
H4 -0.932 -0.828 1.047
H5 -0.932 -0.828 -1.047

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.74922.25651.44591.4459
O21.74920.99182.43892.4389
H32.25650.99183.15473.1547
H41.44592.43893.15472.0944
H51.44592.43893.15472.0944

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 107.592 O2 P1 H4 99.078
O2 P1 H5 99.078 H4 P1 H5 92.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.353      
2 O -0.664      
3 H 0.369      
4 H -0.029      
5 H -0.029      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.728 -0.260 0.000 0.773
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.442 4.347 0.000
y 4.347 -20.807 0.000
z 0.000 0.000 -20.066
Traceless
 xyz
x 0.994 4.347 0.000
y 4.347 -1.053 0.000
z 0.000 0.000 0.059
Polar
3z2-r20.117
x2-y21.365
xy4.347
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.223 0.964 0.000
y 0.964 3.685 0.000
z 0.000 0.000 3.295


<r2> (average value of r2) Å2
<r2> 36.926
(<r2>)1/2 6.077