Lithium bromide
- Formula: BrLi
- Molecular weight: 86.845
- IUPAC Standard InChIKey: AMXOYNBUYSYVKV-UHFFFAOYSA-M
- CAS Registry Number: 7550-35-8
- Chemical structure:
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Condensed phase thermochemistry data
Go To: Top, 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 |
---|---|---|---|---|---|
ΔfH°liquid | -80.839 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1966 |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid,1 bar | 20.22 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1966 |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°solid | -83.870 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1966 |
Quantity | Value | Units | Method | Reference | Comment |
S°solid | 17.70 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1966 |
Liquid 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 823. to 2000. |
---|---|
A | 15.59990 |
B | 4.087510×10-10 |
C | -3.137042×10-10 |
D | 7.685230×10-11 |
E | 7.205000×10-12 |
F | -85.48910 |
G | 39.09921 |
H | -80.83800 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1966 |
Solid 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 298. to 823. |
---|---|
A | 17.06060 |
B | -19.57220 |
C | 28.41489 |
D | -7.738810 |
E | -0.164690 |
F | -88.87579 |
G | 42.05719 |
H | -83.87010 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1966 |
Constants of diatomic molecules
Go To: Top, Condensed phase thermochemistry 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 January, 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 | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Peaks in the electron energy loss spectrum at 6.9 and 8.5 eV Geiger and Pfeiffer, 1968. Continuous absorption above 33000 cm-1, first maximum at ~39000 cm-1. 1 | ||||||||||||
A 2 | A ← X | |||||||||||
↳Berry and Klemperer, 1957 | ||||||||||||
X 1Σ+ | 0 | 563.16 | 3.53 3 | 0.02 | 0.5553990 | 0.0056442 4 | 0.0000244 | 2.159E-6 | 2.170427 5 | |||
↳Klemperer and Rice, 1957; Klemperer, Norris, et al., 1960 | ||||||||||||
Rotation sp. | ||||||||||||
↳Honig, Mandel, et al., 1954; Rusk and Gordy, 1962; Hebert, Breivogel, et al., 1964 | ||||||||||||
Mol. beam rf electric reson. 6 | ||||||||||||
↳Hebert, Breivogel, et al., 1964; Hebert and Street, 1969; Hilborn, Gallagher, et al., 1972 | ||||||||||||
Mol. beam magn. reson. 7 | ||||||||||||
↳Mehran, Brooks, et al., 1966 |
Notes
1 | Absorption cross sections Davidovits and Brodhead, 1967. |
2 | Diffuse absorption bands at 31560, 31018, 30467, 29879, (29442) cm-1 |
3 | Vibrational constants from the infrared spectrum of the natural isotopic mixture. |
4 | Rotational constants evaluated Hebert, Breivogel, et al., 1964 from the microwave results for 6Li79Br. |
5 | Rot.-vibr. Sp. 10 |
6 | Dipole moment of 6Li79Br: μel[D] = 7.2262 + 0.0832(v+1/2) + 0.00057(v+1/2)2 Hebert, Breivogel, et al., 1964. For electric quadrupole and other hyperfine coupling constants of the various isotopes see Hebert, Breivogel, et al., 1964, Hebert and Street, 1969, Hilborn, Gallagher, et al., 1972. The Zeeman spectrum was studied by the electric resonance method Cecchi and Ramsey, 1974; gJ(7Li79Br) = 0.11206 superseding an earlier value by the magnetic resonance method Mehran, Brooks, et al., 1966; also 79,81Br nuclear magnetic moments. |
7 | Li nuclear reorientation spectrum Kusch, 1949, Logan, Cote, et al., 1952, Kusch, 1959. |
8 | Thermochemical value Brewer and Brackett, 1961, Bulewicz, Phillips, et al., 1961. |
9 | Maximum of a very broad photoelectron peak with two additional ill-defined peaks at 10.6 and 11.6 eV, the latter possibly due to the dimer (LiBr)2 Goodman, Allen, et al., 1974. |
10 | For IR spectrum in inert gas matrices see Schlick and Schnepp, 1964. |
References
Go To: Top, Condensed phase thermochemistry 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]
Geiger and Pfeiffer, 1968
Geiger, J.; Pfeiffer, H.-C.,
Untersuchung der Anregung innerer Elektronen von Alkalihalogenidmolekulen im Energieverlustspektrum von 25 keV-Elektronen,
Z. Phys., 1968, 208, 105. [all data]
Berry and Klemperer, 1957
Berry, R.S.; Klemperer, W.,
Spectra of the alkali halides. III. Electronic spectra of lithium chloride, lithium bromide, and lithium iodide,
J. Chem. Phys., 1957, 26, 724. [all data]
Klemperer and Rice, 1957
Klemperer, W.; Rice, S.A.,
Infrared spectra of the alkali halides. I. Lithium halides,
J. Chem. Phys., 1957, 26, 618. [all data]
Klemperer, Norris, et al., 1960
Klemperer, W.; Norris, W.G.; Buchler, A.; Emslie, A.G.,
Infrared spectra of lithium halide monomers,
J. Chem. Phys., 1960, 33, 1534. [all data]
Honig, Mandel, et al., 1954
Honig, A.; Mandel, M.; Stitch, M.L.; Townes, C.H.,
Microwave spectra of the alkali halides,
Phys. Rev., 1954, 96, 629. [all data]
Rusk and Gordy, 1962
Rusk, J.R.; Gordy, W.,
Millimeter wave molecular beam spectroscopy: alkali bromides and iodides,
Phys. Rev., 1962, 127, 817. [all data]
Hebert, Breivogel, et al., 1964
Hebert, A.J.; Breivogel, F.W., Jr.; Street, K., Jr.,
Radio-frequency and microwave spectra of LiBr by the molecular-beam electric-resonance method,
J. Chem. Phys., 1964, 41, 2368. [all data]
Hebert and Street, 1969
Hebert, A.J.; Street, K., Jr.,
Nuclear-quadrupole ratio of bromine isotopes in molceular LiBr,
Phys. Rev., 1969, 178, 205. [all data]
Hilborn, Gallagher, et al., 1972
Hilborn, R.C.; Gallagher, T.F., Jr.; Ramsey, N.F.,
Hyperfine structure of 7Li79,81Br by molecular-beam electric resonance,
J. Chem. Phys., 1972, 56, 855. [all data]
Mehran, Brooks, et al., 1966
Mehran, F.; Brooks, R.A.; Ramsey, N.F.,
Rotational magnetic moments of alkali-halide molecules,
Phys. Rev., 1966, 141, 93. [all data]
Davidovits and Brodhead, 1967
Davidovits, P.; Brodhead, D.C.,
Ultraviolet absorption cross sections for the alkali halide vapors,
J. Chem. Phys., 1967, 46, 2968. [all data]
Cecchi and Ramsey, 1974
Cecchi, J.L.; Ramsey, N.F.,
Molecular Zeeman spectra of 6,7Li 79,81Br,
J. Chem. Phys., 1974, 60, 53. [all data]
Kusch, 1949
Kusch, P.,
On the nuclear electric quadrupole moment of Li6,
Phys. Rev., 1949, 75, 887. [all data]
Logan, Cote, et al., 1952
Logan, R.A.; Cote, R.E.; Kusch, P.,
The sign of the quadrupole interaction energy in diatomic molecules,
Phys. Rev., 1952, 86, 280. [all data]
Kusch, 1959
Kusch, P.,
Nuclear reorientation spectrum of Li7 in the gaseous monomers and dimers of the lithium halides,
J. Chem. Phys., 1959, 30, 52. [all data]
Brewer and Brackett, 1961
Brewer, L.; Brackett, E.,
The dissociation energies of gaseous alkali halides,
Chem. Rev., 1961, 61, 425. [all data]
Bulewicz, Phillips, et al., 1961
Bulewicz, E.M.; Phillips, L.F.; Sugden, T.M.,
Determination of dissociation constants and heats of formation of simple molecules by flame photometry. Part 8. Stabilities of the gaseous diatomic halides of certain metals,
Trans. Faraday Soc., 1961, 57, 921. [all data]
Goodman, Allen, et al., 1974
Goodman, T.D.; Allen, J.D., Jr.; Cusachs, L.C.; Schweitzer, G.K.,
The photoelectron spectra of gaseous alkali halides,
J. Electron Spectrosc. Relat. Phenom., 1974, 3, 289. [all data]
Schlick and Schnepp, 1964
Schlick, S.; Schnepp, O.,
Infrared spectra of the lithium halide monomers and dimers in inert matrices at low temperature,
J. Chem. Phys., 1964, 41, 463. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Constants of diatomic molecules, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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