H2As

• Formula: AsH₂
• Molecular weight: 76.93748
• CAS Registry Number: 14644-45-2
• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
• Options:
  • Switch to SI units

Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

HAs^- +  = H₂As

By formula: HAs^- + H⁺ = H₂As

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

View reactions leading to H₂As⁺ (ion structure unspecified)

De-protonation reactions

HAs^- +  = H₂As

By formula: HAs^- + H⁺ = H₂As

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Marilyn E. Jacox

State:   A

State:   X

Additional references: Jacox, 1994, page 23; Jacox, 2003, page 20; Fujiwara, Kobayashi, et al., 1998; Fujiwara and Saito, 1998; Hughes, Brown, et al., 2000; Grimminger and Clouthier, 2012

Notes

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Rackwitz, Feldman, et al., 1977
Rackwitz, R.; Feldman, D.; Kaiser, H.J.; Heincke, E., Photodetachment bei einigen zweiatomigen negativen hydridionen: BeH-, MgH-, CaH-, ZnH-, PH-, AsH-, Z. Naturforsch. A:, 1977, 32, 594. [all data]

Dixon, Duxbury, et al., 1968
Dixon, R.N.; Duxbury, G.; Lamberton, H.M., The Analysis of a FormulaAFormula-FormulaBFormula Electronic Band System of the AsHFormula and AsDFormula Radicals, Proc. Roy. Soc. (London) A305, 1968, 305, 1481, 271, https://doi.org/10.1098/rspa.1968.0118 . [all data]

Ni, Lu, et al., 1986
Ni, T.; Lu, Q.; Ma, X.; Yu, S.; Kong, F., The emission spectrum of AsH2(Ã2A1 → X2B1) via uv photolysis of AsH3, Chem. Phys. Lett., 1986, 126, 5, 417, https://doi.org/10.1016/S0009-2614(86)80127-0 . [all data]

He and Clouthier, 2007
He, S.-G.; Clouthier, D.J., Laser spectroscopy and dynamics of the jet-cooled AsH[sub 2] free radical, J. Chem. Phys., 2007, 126, 15, 154312, https://doi.org/10.1063/1.2721544 . [all data]

Zhao, Qin, et al., 2009
Zhao, D.; Qin, C.; Ji, M.; Zhang, Q.; Chen, Y., Absorption spectra of AsH2 radical in 435--510nm by cavity ringdown spectroscopy, J. Mol. Spectrosc., 2009, 256, 2, 192, https://doi.org/10.1016/j.jms.2009.04.008 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]

Fujiwara, Kobayashi, et al., 1998
Fujiwara, H.; Kobayashi, K.; Ozeki, H.; Saito, S., Submillimeter-wave spectrum of the AsH[sub 2] radical in the [sup 2]B[sub 1] ground electronic state, J. Chem. Phys., 1998, 109, 13, 5351, https://doi.org/10.1063/1.477153 . [all data]

Fujiwara and Saito, 1998
Fujiwara, H.; Saito, S., Microwave Spectrum of the AsD2(X2B1) Radical: Harmonic Force Field and Molecular Structure, J. Mol. Spectrosc., 1998, 192, 2, 399, https://doi.org/10.1006/jmsp.1998.7708 . [all data]

Hughes, Brown, et al., 2000
Hughes, R.A.; Brown, J.M.; Evenson, K.M., Rotational Spectrum of the AsH2 Radical in Its Ground State, Studied by Far-Infrared Laser Magnetic Resonance, J. Mol. Spectrosc., 2000, 200, 2, 210, https://doi.org/10.1006/jmsp.1999.8037 . [all data]

Grimminger and Clouthier, 2012
Grimminger, R.A.; Clouthier, D.J., Toward an improved understanding of the AsH2 free radical: Laser spectroscopy, ab initio calculations, and normal coordinate analysis, J. Chem. Phys., 2012, 137, 22, 224307, https://doi.org/10.1063/1.4769778 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References

• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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