P2+
- Formula: P2+
- Molecular weight: 61.946975
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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
Symbol | Meaning |
---|---|
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) |
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
---|---|---|---|---|---|---|---|---|---|---|---|---|
F (2![]() | (40180) 1 | [810] 1 | ||||||||||
C2 2![]() | 28870.6 | 441.47 2 Z | 2.58 | 0.21629 | 0.00136 | 2.0E-7 | 2.2434 | C2 ![]() | 28754.2 2 Z | |||
↳missing citation; Brion, Malicet, et al., 1973; missing citation | ||||||||||||
C1 2![]() | (28686.6) 3 | 441.47 2 Z | 2.58 | 0.21629 | 0.00136 | 2.0E-7 | 2.2434 | C1 ![]() | 28312.3 2 Z | |||
↳missing citation; Brion, Malicet, et al., 1973; missing citation | ||||||||||||
B 2![]() | (25566) | 410.50 4 Z | 3.23 | 0.2419 4 | 0.00211 | 3.3E-7 | 2.121 | B ![]() | 23224.89 4 Z | |||
↳missing citation | ||||||||||||
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
D2 2![]() | (18832.5) | 462.2 | 2.45 | 0.2196 | 0.00142 | 2.0E-7 | 2.226 | D2 ![]() | 18467.6 Z | |||
↳Brion, Malicet, et al., 1973, 2; missing citation | ||||||||||||
D1 2![]() | 18740.7 | 462.2 | 2.45 | 0.2196 | 0.00142 | 2.0E-7 | 2.226 | D1 ![]() | 18635.8 Z | |||
↳Brion, Malicet, et al., 1973, 2; missing citation | ||||||||||||
A 2![]() | (2179) 5 | [733.0] $gZ | 0.3037 6 | 0.0021 | 1.893 | |||||||
X2 2![]() | (260) 7 | 672.20 2 Z | 2.74 | 0.27600 | 0.00151 | 2.0E-7 | 1.9859 | |||||
X1 2![]() | 0 | 672.20 2 Z | 2.74 | 0.27600 | 0.00151 | 2.0E-7 | 1.9859 |
Notes
1 | From Rydberg series of P2 Carroll and Mitchell, 1975 and observations by photo-electron spectroscopy Bulgin, Dyke, et al., 1976. |
2 | Vibrational 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. |
3 | Av strongly dependent on v, Av+1 - Av = -4.13 cm-1 Malicet, Brion, et al., 1976. |
4 | Vibrational numbering uncertain; the B state has not been observed in the photoelectron spectrum Bulgin, Dyke, et al., 1976. |
5 | From 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. |
6 | Vibrational numbering uncertain. |
7 | The magnitude of the spin-orbit coupling in the 2![]() |
8 | D00(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
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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