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P2+


Constants of diatomic molecules

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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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through May, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 31P2+
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
F (2Sigmau+) (40180) 1 [810] 1          
C2 2Pig 3/2 28870.6 441.47 2 Z 2.58  0.21629 0.00136  2.0E-7  2.2434 C2 rarrow X1 R 28754.2 2 Z
missing citation; Brion, Malicet, et al., 1973; missing citation
C1 2Pig 1/2 (28686.6) 3 441.47 2 Z 2.58  0.21629 0.00136  2.0E-7  2.2434 C1 rarrow X2 R 28312.3 2 Z
missing citation; Brion, Malicet, et al., 1973; missing citation
B 2Sigmau+ (25566) 410.50 4 Z 3.23  0.2419 4 0.00211  3.3E-7  2.121 B rarrow A R 23224.89 4 Z
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
D2 2Pig 1/2 (18832.5) 462.2 2.45  0.2196 0.00142  2.0E-7  2.226 D2 rarrow X2 R 18467.6 Z
Brion, Malicet, et al., 1973, 2; missing citation
D1 2Pig 3/2 18740.7 462.2 2.45  0.2196 0.00142  2.0E-7  2.226 D1 rarrow X1 R 18635.8 Z
Brion, Malicet, et al., 1973, 2; missing citation
A 2Sigmag+ (2179) 5 [733.0] $gZ   0.3037 6 0.0021    1.893  
X2 2Piu 1/2 (260) 7 672.20 2 Z 2.74  0.27600 0.00151  2.0E-7  1.9859  
X1 2Piu 3/2 0 672.20 2 Z 2.74  0.27600 0.00151  2.0E-7  1.9859  

Notes

1From Rydberg series of P2 Carroll and Mitchell, 1975 and observations by photo-electron spectroscopy Bulgin, Dyke, et al., 1976.
2Vibrational numbering of Malicet, Brion, et al., 1976; the previous numbering of Narasimham, 1957 has been increased by one unit in both upper (C) and lower (X) states following the recommendations of Carroll and Mitchell, 1975.
3Av strongly dependent on v, Av+1 - Av = -4.13 cm-1 Malicet, Brion, et al., 1976.
4Vibrational numbering uncertain; the B state has not been observed in the photoelectron spectrum Bulgin, Dyke, et al., 1976.
5From Rydberg limits of P2 Carroll and Mitchell, 1975 and the estimated spin splitting in the ground state of P2+; in reasonable agreement with the photoelectron-spectroscopic value of 2230 cm-1 Bulgin, Dyke, et al., 1976.
6Vibrational numbering uncertain.
7The magnitude of the spin-orbit coupling in the 2Pi ground and excited states has been estimated Malicet, Brion, et al., 1976 from the effective B values. The photoelectron spectrum Bulgin, Dyke, et al., 1976 suggests for the ground state a spin splitting of ~150 cm-1 Bulgin, Dyke, et al., 1976.
8D00(P2) + I.P (P) - I.P (P2).

References

Go To: Top, Constants of diatomic molecules, Notes

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

Brion, Malicet, et al., 1973
Brion, J.; Malicet, J.; Guenebaut, H., Analyse rotationnelle de la bande (0,2) de la transition C2«PI»-X2«PI» du radical P2+, C.R. Acad. Sci. Paris, Ser. C, 1973, 276, 471-474. [all data]

Brion, Malicet, et al., 1973, 2
Brion, J.; Malicet, J.; Guenebaut, H., Anaylse d'un nouveau systeme electronique du radical P2+, C.R. Acad. Sci. Paris, Ser. C, 1973, 276, 551-553. [all data]

Carroll and Mitchell, 1975
Carroll, P.K.; Mitchell, P.I., The absorption spectrum of diatomic phosphorus between 1370 and 600 A, Proc. Roy. Soc. London A, 1975, 342, 93. [all data]

Bulgin, Dyke, et al., 1976
Bulgin, D.K.; Dyke, J.M.; Morris, A., HeI photoelectron spectrum of the P2(X1«SIGMA»+) molecule, J. Chem. Soc. Faraday Trans. 2, 1976, 72, 2225. [all data]

Malicet, Brion, et al., 1976
Malicet, J.; Brion, J.; Guenebaut, H., Spectre du radical P2+: Etude des transitions C2«PI» - X2«PI» et D2«PI»-X2«PI», Can. J. Phys., 1976, 54, 907-914. [all data]

Narasimham, 1957
Narasimham, N.A., The spectrum of the P2+ molecule, Can. J. Phys., 1957, 35, 1242-1249. [all data]


Notes

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