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Strontium monofluoride


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
Deltafgas-294.55kJ/molReviewChase, 1998Data last reviewed in December, 1972
Quantity Value Units Method Reference Comment
gas,1 bar239.92J/mol*KReviewChase, 1998Data 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 (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. - 1500.1500. - 6000.
A 35.5731248.01809
B 4.411903-7.962696
C -3.1288342.185056
D 0.845486-0.137239
E -0.191361-5.955506
F -305.9726-319.2974
G 280.7071288.0688
H -294.5544-294.5544
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1972 Data last reviewed in December, 1972

Gas phase ion energetics 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 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 ± 0.06EVALBelyaev, Gotkis, et al., 1990LL
5.0 ± 0.3EIHildenbrand, 1968RDSH
4.9 ± 0.3EIGreen, Blue, et al., 1964RDSH
5.2 ± 0.3EIEhlert, Blue, et al., 1964RDSH

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 October, 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 (88)Sr19F
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
G (2Pi) 34758.9 573.9 H 1.28        G larrow X V 34795.4 H
Fowler, 1941
F 2Sigma+ 32823.7 598.5 H 3.42  [0.26966] 1 (0.00187)  [0.0223E-5]  [2.0004] F lrarrow X V 32871.96 Z
Fowler, 1941; Barrow and Beale, 1967; Novikov and Gurvich, 1967
E 2Pi 31615          E lrarrow X V 31646.5 H
Fowler, 1941; Novikov and Gurvich, 1967
31529.1 564.4 H 3.20        E lrarrow X V 31560.4 H
Fowler, 1941; Novikov and Gurvich, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
D 2Sigma+ 28296.6 552.1 H 2.15        D lrarrow X V 28322.0 H
Fowler, 1941; Novikov and Gurvich, 1967
C 2Pi 27445          C lrarrow X R 27419.3 H
Johnson, 1929; Fowler, 1941; Novikov and Gurvich, 1967
27384.1 450.5 2 H 1.72 2        C lrarrow X R 27358.8 H
Johnson, 1929; Fowler, 1941; Novikov and Gurvich, 1967
B 2Sigma+ 17267.42 495.8 3 Z 2.34  0.249396 3 4 0.001557  0.0252E-5  2.08010 B lrarrow X R 17264.10 Z
Johnson, 1929; missing citation; Fowler, 1941; Ahrens, 1948; Steimle, Domaille, et al., 1977
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 2Pi 15349.0 507.3 2 H 2.18 2        A lrarrow 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 lrarrow X 5 V 15071.6 H
Johnson, 1929; missing citation; Fowler, 1941; Novikov and Gurvich, 1967
X 2Sigma+ 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

1Spin doubling constant |gamma| = 0.043 Barrow and Beale, 1967.
2Vibrational constants of Novikov and Gurvich, 1967.
3Constants for 88Sr19F Steimle, Domaille, et al., 1977, Domaille, Steimle, et al., 1977.
4Large spin doubling, gamma = -0.13534 cm-1 Domaille, Steimle, et al., 1977.
5Radiative lifetime tau = 23 ns Dagdigian, Cruse, et al., 1974.
6Similar constants are obtained from bandhead measurements in D-X, E-X, F-X: omega"e = 501.3, omega"ex"e = 2.25 (averaged values).
7Spin-rotation interaction gamma = +0.00249 Domaille, Steimle, et al., 1977.
8Rotation sp. 11
9In Ne and Ar matrices at 4 K.
10Thermochemical 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.
11Microwave optical double resonance.

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, 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 B2«SIGMA»+-X2«SIGMA»+ 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 X2«SIGMA»+ 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

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