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II.A.1. (XV.A.)

Listing of experimental data for AsH2 (Arsenic dihydride)

InChI=1S/AsH2/h1H2 [AsH2]
State Conformation
2A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation 167.73 1.30 kJ mol-1 1993Jor/Rob:215
Hfg(0K) enthalpy of formation 171.29 1.30 kJ mol-1 1993Jor/Rob:215
Entropy (298.15K) entropy 225.19   J K-1 mol-1 1993Jor/Rob:215
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 10.03   kJ mol-1 1993Jor/Rob:215
Heat Capacity (298.15K) heat capacity 35.10   J K-1 mol-1 1993Jor/Rob:215
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency (cm-1) Frequency Reference Intensity (km mol-1) Int. unc. Intensity Reference Comment
1 A1 2097 2007He/Clo:154312      
2 A1 984 2007He/Clo:154312      

Calculated vibrational frequencies for AsH2 (Arsenic dihydride).
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 AsH2 (Arsenic dihydride).

Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6

Geometric Data
picture of Arsenic dihydride

Point Group C2v

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

Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å

Calculated geometries for AsH2 (Arsenic dihydride).

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-As 2

Atom 1 Atom 2
As1 H2
As1 H3

Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
Calculated electric dipole moments for AsH2 (Arsenic dihydride).
Electric quadrupole moment quadrupole
Calculated electric quadrupole moments for AsH2 (Arsenic dihydride).

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squib reference DOI
1993Jor/Rob:215 AS Jordan, A Robertson, Jr "Thermodynamic properties of AsH3 and its subhydrides" Journal of Materials Science: Materials in Electronics, 4 (1993) 215-224 10.1007/BF00224744
2007He/Clo:154312 S-G He, D.J. Clouthier "Laser spectroscopy and dynamics of the jet-cooled AsH2 free radical" J. Chem. Phys. 126, 154312 (2007) 10.1063/1.2721544

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