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:
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Data at other public NIST sites:
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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

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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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