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Experimental data for H2POH (Phosphinous acid)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/H3OP/c1-2/h1H,2H2 RYIOLWQRQXDECZ-UHFFFAOYSA-N PO
State Conformation
1A1' CS trans
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A' 3644   webbook      
2 A' 2305   webbook      
3 A' 1124   webbook      
4 A' 1075   webbook      
5 A' 915   webbook      
6 A' 797   webbook      
7 A" 2278   webbook      
8 A" 848   webbook      
9 A" 375   webbook      

Calculated vibrational frequencies for H2POH (Phosphinous acid).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for H2POH (Phosphinous acid).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Phosphinous acid

Point Group Cs


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for H2POH (Phosphinous acid).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
O-P 1
H-O 1
H-P 2

Connectivity
Atom 1 Atom 2
P1 O2
P1 H4
P1 H5
O2 H3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1'
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1' CS trans False           Cs 2 3
1 2 1A1' CS cis True           Cs 2 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for H2POH (Phosphinous acid).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1' CS trans False       Cs 2 3
1 2 1A1' CS cis True       Cs 2 3

Calculated electric quadrupole moments for H2POH (Phosphinous acid).

References
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squib reference DOI
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

Got a better number? Please email us at cccbdb@nist.gov


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