Strontium monofluoride
- Formula: FSr
- Molecular weight: 106.62
- IUPAC Standard InChIKey: GXLMLAGMLTWIOF-UHFFFAOYSA-M
- CAS Registry Number: 13569-27-2
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, 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 |
---|---|---|---|---|---|
ΔfH°gas | -70.399 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1972 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 57.342 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1972 |
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 (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 1500. | 1500. to 6000. |
---|---|---|
A | 8.502180 | 11.47660 |
B | 1.054470 | -1.903131 |
C | -0.747809 | 0.522241 |
D | 0.202076 | -0.032801 |
E | -0.045736 | -1.423401 |
F | -73.12921 | -76.31391 |
G | 67.09061 | 68.85010 |
H | -70.40019 | -70.40019 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in December, 1972 | Data last reviewed in December, 1972 |
Gas phase ion energetics data
Go To: Top, Gas phase 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 as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to FSr+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
5.21 ± 0.06 | EVAL | Belyaev, Gotkis, et al., 1990 | LL |
5.0 ± 0.3 | EI | Hildenbrand, 1968 | RDSH |
4.9 ± 0.3 | EI | Green, Blue, et al., 1964 | RDSH |
5.2 ± 0.3 | EI | Ehlert, Blue, et al., 1964 | RDSH |
Constants of diatomic molecules
Go To: Top, Gas phase 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 October, 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
G (2Π) | 34758.9 | 573.9 H | 1.28 | G ← X V | 34795.4 H | |||||||
↳Fowler, 1941 | ||||||||||||
F 2Σ+ | 32823.7 | 598.5 H | 3.42 | [0.26966] 1 | (0.00187) | [0.0223E-5] | [2.0004] | F ↔ X V | 32871.96 Z | |||
↳Fowler, 1941; Barrow and Beale, 1967; Novikov and Gurvich, 1967 | ||||||||||||
E 2Π | 31615 | E ↔ X V | 31646.5 H | |||||||||
↳Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
31529.1 | 564.4 H | 3.20 | E ↔ X V | 31560.4 H | ||||||||
↳Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
D 2Σ+ | 28296.6 | 552.1 H | 2.15 | D ↔ X V | 28322.0 H | |||||||
↳Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
C 2Π | 27445 | C ↔ X R | 27419.3 H | |||||||||
↳Johnson, 1929; Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
27384.1 | 450.5 2 H | 1.72 2 | C ↔ X R | 27358.8 H | ||||||||
↳Johnson, 1929; Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
B 2Σ+ | 17267.42 | 495.8 3 Z | 2.34 | 0.249396 3 4 | 0.001557 | 0.0252E-5 | 2.08010 | B ↔ X R | 17264.10 Z | |||
↳Johnson, 1929; missing citation; Fowler, 1941; Ahrens, 1948; Steimle, Domaille, et al., 1977 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
A 2Π | 15349.0 | 507.3 2 H | 2.18 2 | A ↔ X 5 V | 15352.0 H | |||||||
↳Johnson, 1929; missing citation; Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
15068.3 | 507.9 2 H | 2.21 2 | A ↔ X 5 V | 15071.6 H | ||||||||
↳Johnson, 1929; missing citation; Fowler, 1941; Novikov and Gurvich, 1967 | ||||||||||||
X 2Σ+ | 0 | 502.4 3 6 Z | 2.27 | 0.250533 3 7 | 0.001546 | 0.0249E-5 | 2.07537 8 | |||||
↳Domaille, Steimle, et al., 1977 | ||||||||||||
ESR sp. 9 | ||||||||||||
↳Knight, Easley, et al., 1971 |
Notes
1 | Spin doubling constant |γ| = 0.043 Barrow and Beale, 1967. |
2 | Vibrational constants of Novikov and Gurvich, 1967. |
3 | Constants for 88Sr19F Steimle, Domaille, et al., 1977, Domaille, Steimle, et al., 1977. |
4 | Large spin doubling, γ = -0.13534 cm-1 Domaille, Steimle, et al., 1977. |
5 | Radiative lifetime τ = 23 ns Dagdigian, Cruse, et al., 1974. |
6 | Similar constants are obtained from bandhead measurements in D-X, E-X, F-X: ω"e = 501.3, ω"ex"e = 2.25 (averaged values). |
7 | Spin-rotation interaction γ = +0.00249 Domaille, Steimle, et al., 1977. |
8 | Rotation sp. 11 |
9 | In Ne and Ar matrices at 4 K. |
10 | Thermochemical value (mass-spectrometry, Hildenbrand, 1968). Re-evaluation by Hildenbrand, 1968 of the earlier data of Blue, Green, et al., 1963, Ehlert, Blue, et al., 1964 gives D00 = 5.45 eV Hildenbrand, 1968; flame photometric value D00= 5.72 eV Ryabova and Gurvich, 1964. |
11 | Microwave optical double resonance. |
References
Go To: Top, Gas phase 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]
Belyaev, Gotkis, et al., 1990
Belyaev, V.N.; Gotkis, I.S.; Lebedeva, N.L.; Krasnov, K.S.,
Ionization potentials of MX molecules (M = Ca, Sr, Ba; X = F, Cl, Br, I, OH, O),
Russ. J. Phys. Chem., 1990, 64, 773. [all data]
Hildenbrand, 1968
Hildenbrand, D.L.,
Mass-spectrometric studies of bonding in the group IIA fluorides,
J. Chem. Phys., 1968, 48, 3657. [all data]
Green, Blue, et al., 1964
Green, J.W.; Blue, G.D.; Ehlert, T.C.; Margrave, J.L.,
Mass spectrometric studies at high temperatures. III. The sublimation pressures of magnesium, strontium, and barium fluorides,
J. Chem. Phys., 1964, 41, 2245. [all data]
Ehlert, Blue, et al., 1964
Ehlert, T.C.; Blue, G.D.; Green, J.W.; Margrave, J.L.,
Mass spectrometric studies at high temperatures. IV. Dissociation energies of the alkaline earth monofluorides,
J. Chem. Phys., 1964, 41, 2250. [all data]
Fowler, 1941
Fowler, C.A., Jr.,
New absorption spectra of the alkaline earth fluorides,
Phys. Rev., 1941, 59, 645. [all data]
Barrow and Beale, 1967
Barrow, R.F.; Beale, J.R.,
The internuclear distance in gaseous SrF,
Chem. Commun., 1967, 606. [all data]
Novikov and Gurvich, 1967
Novikov, M.M.; Gurvich, L.V.,
Electronic emission spectrum of SrF,
Opt. Spectrosc. Engl. Transl., 1967, 22, 395, In original 720. [all data]
Johnson, 1929
Johnson, R.C.,
The band spectra of the alkaline earth halides. I. CaF, SrF,
Proc. R. Soc. London A, 1929, 122, 161. [all data]
Ahrens, 1948
Ahrens, L.H.,
Molecular spectroscopic evidence of the existence of strontium isotopes Sr88, Sr87, and Sr86,
Phys. Rev., 1948, 74, 74. [all data]
Steimle, Domaille, et al., 1977
Steimle, T.C.; Domaille, P.J.; Harris, D.O.,
Rotational analysis of the B2Σ+-X2Σ+ system of SrF using a cw tunable dye laser,
J. Mol. Spectrosc., 1977, 68, 134. [all data]
Domaille, Steimle, et al., 1977
Domaille, P.J.; Steimle, T.C.; Harris, D.O.,
The rotational spectrum of the X2Σ+ state of the SrF radical using laser microwave optical double resonance,
J. Mol. Spectrosc., 1977, 68, 146. [all data]
Knight, Easley, et al., 1971
Knight, L.B., Jr.; Easley, W.C.; Weltner, W., Jr.,
Hyperfine interaction and chemical bonding in MgF, CaF, SrF, and BaF molecules,
J. Chem. Phys., 1971, 54, 322. [all data]
Dagdigian, Cruse, et al., 1974
Dagdigian, P.J.; Cruse, H.W.; Zare, R.N.,
Radiative lifetimes of the alkaline earth monohalides,
J. Chem. Phys., 1974, 60, 2330. [all data]
Blue, Green, et al., 1963
Blue, G.D.; Green, J.W.; Ehlert, T.C.; Margrave, J.L.,
Dissociation energies of the alkaline earth monofluorides,
Nature (London), 1963, 199, 804. [all data]
Ryabova and Gurvich, 1964
Ryabova, V.G.; Gurvich, L.V.,
Determination of dissociation energies of metal halides from equilibria in flames. 2. Dissociation energies of CaF, CaF2, SrF, and SrF2,
High Temp. Engl. Transl., 1964, 2, 749, In original 834. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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