Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Lead hydride


Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References, Notes

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
Deltafgas236.19kJ/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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 1000.1000. - 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

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References, Notes

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
Deltar1454. ± 8.4kJ/molD-EAFeigerle, Corderman, et al., 1981gas phase

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Constants of diatomic molecules, References, Notes

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

View reactions leading to HPb+ (ion structure unspecified)

De-protonation reactions

Pb- + Hydrogen cation = HPb

By formula: Pb- + H+ = HPb

Quantity Value Units Method Reference Comment
Deltar1454. ± 8.4kJ/molD-EAFeigerle, Corderman, et al., 1981gas phase

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes

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
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C (2Delta) 1           C rarrow X 26205
Watson and Simon, 1940; Kleman, 1953
B (18030) 2 [478.8] 3 Z   [2.478] 3 4     [2.604] B rarrow 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 (2Pi1/2) 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 2Sigma state; more recently, Kleman, 1953 suggested that the red system of PbH originates from a 4Sigma-(1/2,3/2) upper state.
3Strong perturbations; DeltaG(3/2)= 448.1, DeltaG(5/2)= 438.5, DeltaG(7/2)= 432.6, DeltaG(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: omegae = 535 Gero, 1940, omegaexe = 15 Gero, 1940; Be = 2.48 Gero, 1940, alphae = 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 2Sigma Watson, 1938, Watson and Simon, 1940, reassigned by Howell, 1945, Kleman, 1953. The 2Pi3/2 component is expected at ~8000 cm-1 above 2Pi1/2; 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

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, 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.

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

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References