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: B3LYP/TZVP

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 B3LYP/TZVP
 hartrees
Energy at 0K-418.428932
Energy at 298.15K-418.433013
HF Energy-418.428932
Nuclear repulsion energy60.891808
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 B3LYP/TZVP
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' 3814 3682 47.47      
2 A' 2298 2218 125.19      
3 A' 1141 1102 20.28      
4 A' 1085 1047 41.24      
5 A' 901 870 36.89      
6 A' 776 749 152.71      
7 A" 2303 2223 163.10      
8 A" 908 877 16.50      
9 A" 399 386 118.82      

Unscaled Zero Point Vibrational Energy (zpe) 6812.1 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 6576.4 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 B3LYP/TZVP
ABC
3.64580 0.47186 0.46753

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.108 -0.577 0.000
O2 -0.108 1.105 0.000
H3 0.768 1.506 0.000
H4 0.854 -0.846 1.032
H5 0.854 -0.846 -1.032

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.68222.25991.43631.4363
O21.68220.96342.40802.4080
H32.25990.96342.57022.5702
H41.43632.40802.57022.0640
H51.43632.40802.57022.0640

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 114.595 O2 P1 H4 100.802
O2 P1 H5 100.802 H4 P1 H5 91.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.301      
2 O -0.522      
3 H 0.292      
4 H -0.036      
5 H -0.036      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.239 -0.216 0.000 2.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.484 1.826 0.000
y 1.826 -20.015 0.000
z 0.000 0.000 -20.286
Traceless
 xyz
x -0.333 1.826 0.000
y 1.826 0.370 0.000
z 0.000 0.000 -0.037
Polar
3z2-r2-0.074
x2-y2-0.469
xy1.826
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.898 -0.304 0.000
y -0.304 4.062 0.000
z 0.000 0.000 4.044


<r2> (average value of r2) Å2
<r2> 35.569
(<r2>)1/2 5.964

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-418.429482
Energy at 298.15K-418.433396
HF Energy-418.429482
Nuclear repulsion energy60.802014
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 B3LYP/TZVP
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' 3842 3709 91.31      
2 A' 2350 2268 97.52      
3 A' 1145 1106 22.31      
4 A' 1123 1085 96.43      
5 A' 899 868 24.15      
6 A' 770 743 115.22      
7 A" 2350 2268 124.03      
8 A" 923 891 1.61      
9 A" 249 240 109.02      

Unscaled Zero Point Vibrational Energy (zpe) 6824.6 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 6588.5 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 B3LYP/TZVP
ABC
3.67022 0.46944 0.46556

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.040 -0.583 0.000
O2 0.040 1.110 0.000
H3 0.949 1.425 0.000
H4 -0.929 -0.781 1.032
H5 -0.929 -0.781 -1.032

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.69302.20441.42921.4292
O21.69300.96232.36222.3622
H32.20440.96233.07573.0757
H41.42922.36223.07572.0641
H51.42922.36223.07572.0641

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 109.123 O2 P1 H4 97.974
O2 P1 H5 97.974 H4 P1 H5 92.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.250      
2 O -0.515      
3 H 0.288      
4 H -0.012      
5 H -0.012      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.826 -0.391 0.000 0.914
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.534 4.065 0.000
y 4.065 -20.614 0.000
z 0.000 0.000 -20.149
Traceless
 xyz
x 0.847 4.065 0.000
y 4.065 -0.772 0.000
z 0.000 0.000 -0.075
Polar
3z2-r2-0.151
x2-y21.080
xy4.065
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.004 0.577 0.000
y 0.577 4.080 0.000
z 0.000 0.000 4.037


<r2> (average value of r2) Å2
<r2> 35.552
(<r2>)1/2 5.963