Lead hydride


Gas phase 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.

Quantity Value Units Method Reference Comment
Δfgas236.19kJ/molReviewChase, 1998Data last reviewed in June, 1962
Quantity Value Units Method Reference Comment
gas,1 bar220.76J/mol*KReviewChase, 1998Data last reviewed in June, 1962

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1000.1000. to 6000.
A 20.3791829.41770
B 27.855576.084205
C -16.46274-0.767459
D 3.4315160.030622
E 0.1927550.769496
F 229.6589227.7096
G 238.9001254.2550
H 236.1872236.1872
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1962 Data last reviewed in June, 1962

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

Pb- + Hydrogen cation = HPb

By formula: Pb- + H+ = HPb

Quantity Value Units Method Reference Comment
Δr1454. ± 8.4kJ/molD-EAFeigerle, Corderman, et al., 1981gas phase

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 (208)PbH
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
C (2Δ) 1           C → X 26205
Watson and Simon, 1940; Kleman, 1953
B (18030) 2 [478.8] 3 Z   [2.478] 3 4     [2.604] B → X R 17498.7 3 Z
Watson, 1938; Watson and Simon, 1940
A (17590) (500) 5 (10) 5  (3.025) 5 (0.05) 5    (2.36) (A-X) (17060) 5
X (2Π1/2) 0 6 1564.1 Z 29.75  4.971 0.144  [201E-6]  1.8388  

Notes

1Single weak band, not yet analyzed.
2 Watson, 1938, Watson and Simon, 1940 assumed this to be a 2Σ state; more recently, Kleman, 1953 suggested that the red system of PbH originates from a 4Σ-(1/2,3/2) upper state.
3Strong perturbations; ΔG(3/2)= 448.1, ΔG(5/2)= 438.5, ΔG(7/2)= 432.6, ΔG(9/2)= 403: B1= 2.660, B2= 2.766, B3= 2.770, B4= 2.646 for low J values. Gero, 1940 has estimated the following "deperturbed" constants: ωe = 535 Gero, 1940, ωexe = 15 Gero, 1940; Be = 2.48 Gero, 1940, αe = 0.08 Gero, 1940, T0 = 17520 Gero, 1940.
4Breaking off (predissociation) at N'=30,24,20 for v'=3,4,5, respectively Watson, 1938. The v=5, N=20 level lies at about 20610 cm-1 above the lowest ground state level.
5All constants estimated from the perturbations in B Gero, 1940.
6Originally believed to be 2Σ Watson, 1938, Watson and Simon, 1940, reassigned by Howell, 1945, Kleman, 1953. The 2Π3/2 component is expected at ~8000 cm-1 above 2Π1/2; the corresponding spectrum is in the infrared and not yet observed.
7From the predissociation in B assuming dissociation at that limit into 3P1 + 2S.

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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Feigerle, Corderman, et al., 1981
Feigerle, C.S.; Corderman, R.R.; Lineberger, W.C., Electron affinities of B, Al, Bi, and Pb, J. Chem. Phys., 1981, 74, 2, 1513, https://doi.org/10.1063/1.441174 . [all data]

Watson and Simon, 1940
Watson, W.W.; Simon, R., Spectra of lead hydride and tin hydride in the near infra-red, Phys. Rev., 1940, 57, 708. [all data]

Kleman, 1953
Kleman, Thesis, Stockholm, 1953, 1. [all data]

Watson, 1938
Watson, W.W., The spectrum of lead hydride, Phys. Rev., 1938, 54, 1068. [all data]

Gero, 1940
Gero, L., Zur vervollstandigung des termschemas von bleihydrid, Z. Phys., 1940, 116, 379. [all data]

Howell, 1945
Howell, H.G., The spectra of tin and lead hydrides, Proc. Phys. Soc. London, 1945, 57, 37. [all data]


Notes

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