Phosphino radical

Formula: H₂P
Molecular weight: 32.98964
IUPAC Standard InChI: InChI=1S/H2P/h1H2
IUPAC Standard InChIKey: FVZVCSNXTFCBQU-UHFFFAOYSA-N
CAS Registry Number: 13765-43-0
Chemical structure:
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Other data available:
- Gas phase thermochemistry data
- Gas phase ion energetics data
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Reaction thermochemistry data

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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

HP^- + = Phosphino radical

By formula: HP^- + H⁺ = H₂P

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	369.8 ± 8.1	kcal/mol	D-EA	Ervin and Lineberger, 2005	gas phase

Vibrational and/or electronic energy levels

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Data compiled by: Marilyn E. Jacox

State: A

Energy (cm^-1)	Med.	Transition	λ_min (nm)	λ_max (nm)	References


T_o = 18276.569	gas	A-X	360	880	Ramsay, 1956
					Guenebaut and Pascat, 1964
					Guenebaut, Pascat, et al., 1965
					Dixon, Duxbury, et al., 1967
					Pascat, Berthou, et al., 1968
					Berthou, Pascat, et al., 1972
					Chen, Zhang, et al., 1994
					Hirota and Kakimoto, 1995
					Jakubek, Bunker, et al., 2006
T_o = 18215 ± 4	Ar	A-X	405	550	Larzilliere and Jacox, 1979
					Withnall, McCluskey, et al., 1989

Vib. sym.	No.	Approximate type of mode	cm^-1	Med.	Method	References


a₁	2	Bend	949.12	gas	UV	Guenebaut and Pascat, 1964 Berthou, Pascat, et al., 1972
	2	Bend	949 ± 7	Ar	AB	Larzilliere and Jacox, 1979 Withnall, McCluskey, et al., 1989

State: X

Vib. sym.	No.	Approximate type of mode	cm^-1		Med.	Method	References


a₁	1	Sym. stretch	2298 ± 3		gas	LF Ra	Zittel and Lineberger, 1976 Abraham, Bekkaoui, et al., 1992 Ervin and Lineberger, 2005 Jakubek, Bunker, et al., 2006
	2	Bend	1101.91		gas	LF LMR	Guenebaut and Pascat, 1964 Dixon, Duxbury, et al., 1967 Davies, Russell, et al., 1979 Jakubek, Bunker, et al., 2006
	2	Bend	1103	m	Ar	IR	Larzilliere and Jacox, 1979

Additional references: Jacox, 1994, page 22; Jacox, 1998, page 134; Jacox, 2003, page 19; Barrow, Dixon, et al., 1974; Davies, Russell, et al., 1976; Vervloet and Berthou, 1976; Huie, Long, et al., 1978; Sam and Yardley, 1978; Hills and McKellar, 1979; Birss, Lessard, et al., 1982; Endo, Saito, et al., 1983; Kajita, Endo, et al., 1987; Xuan and Margani, 1990; Hirao, Hayakashi, et al., 1998; Margules, Herbst, et al., 2002

Notes

Medium

Energy separation between the v = 0 levels of the excited and electronic ground states.

References

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

Ervin and Lineberger, 2005
Ervin, K.M.; Lineberger, W.C., Photoelectron spectroscopy of phosphorus hydride anions, J. Chem. Phys., 2005, 122, 19, 194303, https://doi.org/10.1063/1.1881153 . [all data]

Ramsay, 1956
Ramsay, D.A., Absorption Spectra of Free PH2 and PD Radicals, Nature, 1956, 178, 4529, 374, https://doi.org/10.1038/178374a0 . [all data]

Guenebaut and Pascat, 1964
Guenebaut, H.; Pascat, B., Compt. Rend. Acad. Sci. (Paris), 1964, 259, 2412. [all data]

Guenebaut, Pascat, et al., 1965
Guenebaut, H.; Pascat, B.; Berthou, J.-M., J. Chim. Phys., 1965, 62, 867. [all data]

Dixon, Duxbury, et al., 1967
Dixon, R.N.; Duxbury, G.; Ramsay, D.A., Rotational Analysis of the 0-0 Band of the $^2$A$_1$-$^2$B$_1$ Electronic Transition of PH$_2$, Proc. Roy. Soc. (London) A296, 1967, 296, 1445, 137, https://doi.org/10.1098/rspa.1967.0011 . [all data]

Pascat, Berthou, et al., 1968
Pascat, B.; Berthou, J.M.; Prudhomme, J.C.; Guenebaut, H.; Ramsay, D.A., J. Chim. Phys., 1968, 65, 2022. [all data]

Berthou, Pascat, et al., 1972
Berthou, J.M.; Pascat, B.; Guenebaut, H.; Ramsay, D.A., Rotational Analysis of Bands of the Transition of PH, Can. J. Phys., 1972, 50, 19, 2265, https://doi.org/10.1139/p72-301 . [all data]

Chen, Zhang, et al., 1994
Chen, Y.; Zhang, Q.; Zhang, D.; Chen, C.; Yu, S.; Ma, X., Laser-induced fluorescence spectrum of PH2 cooled in a supersonic jet, Chem. Phys. Lett., 1994, 223, 1-2, 104, https://doi.org/10.1016/0009-2614(94)00405-6 . [all data]

Hirota and Kakimoto, 1995
Hirota, E.; Kakimoto, M., Doppler-limited dye laser excitation spectroscopy of the PH2 radical: the band, J. Mol. Struct., 1995, 352/353, 379, https://doi.org/10.1016/0022-2860(94)08513-H . [all data]

Jakubek, Bunker, et al., 2006
Jakubek, Z.J.; Bunker, P.R.; Zachwieja, M.; Nakhate, S.G.; Simard, B.; Yurchenko, S.N.; Thiel, W.; Jensen, P., A dispersed fluorescence and ab initio investigation of the X [sup 2]B[sub 1] and A [sup 2]A[sub 1] electronic states of the PH[sub 2] molecule, J. Chem. Phys., 2006, 124, 9, 094306, https://doi.org/10.1063/1.2168155 . [all data]

Larzilliere and Jacox, 1979
Larzilliere, M.; Jacox, M.E., Natl. Bur. Std. Spec. Pub., 1979, 561, 529. [all data]

Withnall, McCluskey, et al., 1989
Withnall, R.; McCluskey, M.; Andrews, L., Absorption spectra of the phosphorus oxide (PO2 and PO3) radicals in solid argon, J. Phys. Chem., 1989, 93, 1, 126, https://doi.org/10.1021/j100338a028 . [all data]

Zittel and Lineberger, 1976
Zittel, P.F.; Lineberger, W.C., Laser photoelectron spectrometry of PO-, PH-, and PH₂-, J. Chem. Phys., 1976, 65, 1236. [all data]

Abraham, Bekkaoui, et al., 1992
Abraham, P.; Bekkaoui, A.; Bouix, J.; Monteil, Y., Raman spectroscopy of PH3 and PH2 at high temperature and simulation of PH3 Raman spectrum, J. Raman Spectrosc., 1992, 23, 7, 379, https://doi.org/10.1002/jrs.1250230703 . [all data]

Davies, Russell, et al., 1979
Davies, P.B.; Russell, D.K.; Thrush, B.A.; Radford, H.E., Rotational laser magnetic resonance spectroscopy of PH2(X 2B1), Chem. Phys., 1979, 44, 3, 421, https://doi.org/10.1016/0301-0104(79)85225-8 . [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, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [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]

Barrow, Dixon, et al., 1974
Barrow, T.; Dixon, R.N.; Duxbury, G., The Renner effect in a bent triatomic molecule executing a large amplitude bending vibration, Mol. Phys., 1974, 27, 5, 1217, https://doi.org/10.1080/00268977400101071 . [all data]

Davies, Russell, et al., 1976
Davies, P.B.; Russell, D.K.; Thrush, B.A., Laser magnetic resonance spectrum of the PH2 radical, Chem. Phys. Lett., 1976, 37, 1, 43, https://doi.org/10.1016/0009-2614(76)80157-1 . [all data]

Vervloet and Berthou, 1976
Vervloet, M.; Berthou, J.M., Etude du système, Can. J. Phys., 1976, 54, 13, 1375, https://doi.org/10.1139/p76-161 . [all data]

Huie, Long, et al., 1978
Huie, R.E.; Long, N.J.T.; Thrush, B.A., J. Chem. Soc., 1978, Faraday Trans. 2 74, 1253. [all data]

Sam and Yardley, 1978
Sam, C.L.; Yardley, J.T., Laser induced production of excited states of PH and PH2 from phosphine, J. Chem. Phys., 1978, 69, 10, 4621, https://doi.org/10.1063/1.436414 . [all data]

Hills and McKellar, 1979
Hills, G.W.; McKellar, A.R.W., Laser magnetic resonance spectrum of the ν2 band of PH2, J. Chem. Phys., 1979, 71, 3, 1141, https://doi.org/10.1063/1.438459 . [all data]

Birss, Lessard, et al., 1982
Birss, F.W.; Lessard, G.; Thrush, B.A.; Ramsay, D.A., Molecular constants for the ground state of PH2, J. Mol. Spectrosc., 1982, 92, 1, 269, https://doi.org/10.1016/0022-2852(82)90100-X . [all data]

Endo, Saito, et al., 1983
Endo, Y.; Saito, S.; Hirota, E., The microwave spectrum of the PH2 radical, J. Mol. Spectrosc., 1983, 97, 1, 204, https://doi.org/10.1016/0022-2852(83)90346-6 . [all data]

Kajita, Endo, et al., 1987
Kajita, M.; Endo, Y.; Hirota, E., The microwave spectrum of the PH2 radical, J. Mol. Spectrosc., 1987, 124, 1, 66, https://doi.org/10.1016/0022-2852(87)90121-4 . [all data]

Xuan and Margani, 1990
Xuan, C.N.; Margani, A., Dynamics and spectroscopy of PH2(A 2A1), J. Chem. Phys., 1990, 93, 1, 136, https://doi.org/10.1063/1.459612 . [all data]

Hirao, Hayakashi, et al., 1998
Hirao, T.; Hayakashi, S-I.; Yamamoto, S.; Saito, S., Microwave Spectrum of the PD2Radical in the2B1Ground Electronic State, J. Mol. Spectrosc., 1998, 187, 2, 153, https://doi.org/10.1006/jmsp.1997.7457 . [all data]

Margules, Herbst, et al., 2002
Margules, L.; Herbst, E.; Ahrens, V.; Lewen, F.; Winnewisser, G.; Muller, H.S.P., The Phosphidogen Radical, PH2: Terahertz Spectrum and Detectability in Space, J. Mol. Spectrosc., 2002, 211, 2, 211, https://doi.org/10.1006/jmsp.2001.8500 . [all data]

Notes

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Symbols used in this document:

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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