Diphosphine

• Formula: H₄P₂
• Molecular weight: 65.97928
• IUPAC Standard InChI: InChI=1S/H4P2/c1-2/h1-2H2 Copy

  
• IUPAC Standard InChIKey: VURFVHCLMJOLKN-UHFFFAOYSA-N Copy
• CAS Registry Number: 13445-50-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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

H₃P₂^- +  =

By formula: H₃P₂^- + H⁺ = H₄P₂

Gas phase ion energetics 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 as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to H₄P₂⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

H₃P₂^- +  =

By formula: H₃P₂^- + H⁺ = H₄P₂

References

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

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

Smyth and Brauman, 1972
Smyth, K.C.; Brauman, J.I., Photodetachment of electrons from phosphide ion the electron affinity of PH₂^-, J. Chem. Phys., 1972, 56, 1132. [all data]

Elbel, Dieck, et al., 1976
Elbel, S.; Dieck, H.t.; Becker, G.; Ensslin, W., Photoelectron spectra of group 5 compounds. II. Conformational analysis of diphosphine (P₂H₄), Inorg. Chem., 1976, 15, 1235. [all data]

Fehlner and Callen, 1968
Fehlner, T.P.; Callen, R.B., Mass spectrometry of phosphorus hydrides, Advan. Chem. Ser., 1968, 72, 181. [all data]

Wada and Kiser, 1964
Wada, Y.; Kiser, R.W., Mass spectrometric study of phosphine and diphosphine, Inorg. Chem., 1964, 3, 174. [all data]

Saalfeld and Svec, 1963
Saalfeld, F.E.; Svec, H.J., The mass spectra of volatile hydrides. II. Some higher hydrides of the group IVB and VB elements, Inorg. Chem., 1963, 2, 50. [all data]

Saalfeld and Svec, 1964
Saalfeld, F.E.; Svec, H.J., Mass spectra of volatile hydrides. III. Silylphosphine, Inorg. Chem., 1964, 3, 1442. [all data]

Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  ΔrH°	Enthalpy of reaction at standard conditions

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