HSr

Formula: HSr
Molecular weight: 88.63
CAS Registry Number: 13966-64-8
Information on this page:
Other data available:
- Gas phase ion energetics data
Options:
- Switch to calorie-based units

Reaction thermochemistry data

Go To: Top, Constants of diatomic molecules, References, Notes

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

Sr^- + = HSr

By formula: Sr^- + H⁺ = HSr

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1466.3 ± 3.7	kJ/mol	D-EA	Andersen, Petrunin, et al., 1997	gas phase

Constants of diatomic molecules

Go To: Top, Reaction thermochemistry data, References, Notes

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through September, 1977

Symbols used in the table of constants
Symbol	Meaning
State	electronic state and / or symmetry symbol
T_e	minimum electronic energy (cm^-1)
ω_e	vibrational constant – first term (cm^-1)
ω_ex_e	vibrational constant – second term (cm^-1)
ω_ey_e	vibrational constant – third term (cm^-1)
B_e	rotational constant in equilibrium position (cm^-1)
α_e	rotational constant – first term (cm^-1)
γ_e	rotation-vibration interaction constant (cm^-1)
D_e	centrifugal distortion constant (cm^-1)
β_e	rotational constant – first term, centrifugal force (cm^-1)
r_e	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⁾SrH
State	T_e	ω_e	ω_ex_e	ω_ey_e	B_e	α_e	γ_e	D_e	β_e	r_e	Trans.	ν₀₀
Fragments of several additional absorption systems above 30000 cm^-1; tentative rotational analyses.
↳missing citation; Khan and Butt, 1968; missing citation; missing citation
F ²Σ⁺	34096	[1337.0] Z	(33) 1		[4.0020] 2	0.09₂		[13.84E-5]		[2.0561]	F ← X V	34189.97 Z
F ²Σ⁺	↳missing citation; Khan, 1963; Khan, 1966; Khan and Butt, 1968
C ²Σ⁺	26230	1347 H	23.₅		4.008 3	0.132		14E-5		2.055	C ↔ X V	26298.7 Z
C ²Σ⁺	↳Frederickson, Hogan, et al., 1935; Humphreys and Fredrickson, 1936; More and Cornell, 1938; missing citation
D ²Σ⁺	20847.6	1014.1 Z	15.4		1.925 4	0.024		3E-5		2.965	D ↔ X 5 R	20752.0 Z
D ²Σ⁺	↳Watson, Fredrickson, et al., 1936; More and Cornell, 1938
State	T_e	ω_e	ω_ex_e	ω_ey_e	B_e	α_e	γ_e	D_e	β_e	r_e	Trans.	ν₀₀
E ²Π					[3.869] 6			[20E-5]		[2.091]	E → X V	18960 Z
	↳Frederickson, Hogan, et al., 1935
					[3.639] 6			[10E-5]		[2.156]	E → X V	18860 Z
	↳Frederickson, Hogan, et al., 1935
B ²Σ⁺	14340	[1193.₀] Z	(19) 1		3.8788 7	0.0930		17.3E-5		2.0885	B → X V	14352.1 Z
B ²Σ⁺	↳missing citation; Watson, Fredrickson, et al., 1936
A ²Π_r	8				[3.679] 9			[11.3E-5]		[2.144]	A → X V	13653 Z
	↳missing citation
	8				[3.668] 9			[13.3E-5]		[2.148]	A → X V	13360 Z
	↳missing citation
State	T_e	ω_e	ω_ex_e	ω_ey_e	B_e	α_e	γ_e	D_e	β_e	r_e	Trans.	ν₀₀
X ²Σ⁺	0	1206.2 Z	17.0		3.6751 10	0.0814		[13.5E-5] 11		2.1456 12
X ²Σ⁺	↳Knight and Weltner, 1971

Notes

From isotope relations.

Spin doubling constant γ₀ = +0.076. All lines are diffuse owing to predissociation.

Breaking-off in emission at low pressure above N'=19 and 4 in v'=0 and 1, respectively Khan, 1963, 2. Perturbations.

Strong perturbations.

Franck-Condon factors Singh and Srivastava, 1968.

Perturbations.

Spin doubling constant γ₀ = -3.81 N < 10 Watson, Fredrickson, et al., 1936. For a more elaborate evaluation of the spin splitting including higher-order correction terms see Veseth, 1971.

A₀ ~ +300. See also 9.

Very large Λ-type doubling, see Watson and Fredrickson, 1932, Veseth, 1971, 2. The constants given here are effective values; see, however, Veseth, 1971, 3 who has evaluated the true constants by taking into account several usually neglected corrections to the rotational energy formulae for a ²Π state.

From Watson, Fredrickson, et al., 1936; spin doubling constant γ0 = 0.122 Watson, Fredrickson, et al., 1936. Edvinsson, Kopp, et al., 1963 give B₀ = 3.6336, D₀ = 13.39E-5.

D₁ = 12.9E-5.

ESR sp. 14

From the predissociation in C ²Σ⁺ assuming dissociation into ³P₀ + ²S.

In argon matrix at 4 K.

Spin doubling constant γ₀ = +0.035₇.

From the value for SrH.

Breaking-off above N'=29 and 19 in v'=0 and 1, respectively Khan, 1963, 2. Strong perturbations.

Spin doubling constant γ₀ = -2.01 N < 10 Watson, Fredrickson, et al., 1936. See 7.

D₁ = 3.81E-5.

Spin doubling constant γ₀ = +0.061₃.

D₁ = 3.64E-5.

References

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

Andersen, Petrunin, et al., 1997
Andersen, H.H.; Petrunin, V.V.; Kristensen, P.; Andersen, T., Structural properties of the negative strontium ion: Binding energy and fine-structure splitting, Phys. Rev. A, 1997, 55, 4, 3247-3249, https://doi.org/10.1103/PhysRevA.55.3247 . [all data]

Khan and Butt, 1968
Khan, M.A.; Butt, M.R., A study of some new absorption bands of SrH and SrD in the ultra-violet region, J. Phys. B:, 1968, 1, 745. [all data]

Khan, 1963
Khan, M.A., SrH and SrD bands at 2927 Å and 2928 Å, Proc. Phys. Soc. London, 1963, 81, 1047. [all data]

Khan, 1966
Khan, M.A., Rotational analysis of some new absorption bands of SrH and SrD in the ultra-violet region, Proc. Phys. Soc. London, 1966, 89, 165. [all data]

Frederickson, Hogan, et al., 1935
Frederickson, W.R.; Hogan, M.E., Jr.; Watson, W.W., The spectra of strontium hydride, Phys. Rev., 1935, 48, 602. [all data]

Humphreys and Fredrickson, 1936
Humphreys, R.F.; Fredrickson, W.R., The pressure effect on the C band of strontium hydride, Phys. Rev., 1936, 50, 542. [all data]

More and Cornell, 1938
More, K.R.; Cornell, S.D., The band spectra of SrCl and SrH, Phys. Rev., 1938, 53, 806. [all data]

Watson, Fredrickson, et al., 1936
Watson, W.W.; Fredrickson, W.R.; Hogan, M.E., Jr., Strontium deuteride and hydride spectra, Phys. Rev., 1936, 49, 150. [all data]

Knight and Weltner, 1971
Knight, L.B., Jr.; Weltner, W., Jr., Hyperfine interaction and chemical bonding in MgH, CaH, SrH, and BaH molecules, J. Chem. Phys., 1971, 54, 3875. [all data]

Khan, 1963, 2
Khan, M.A., Extension of the C²Σ → X²Σ system of SrD, Proc. Phys. Soc. London, 1963, 82, 564. [all data]

Singh and Srivastava, 1968
Singh, P.D.; Srivastava, Y.P., Franck-Condon factors and r-centroids for some bands of the SrH, J. Quant. Spectrosc. Radiat. Transfer, 1968, 8, 1443. [all data]

Veseth, 1971
Veseth, L., An investigation of the interaction between close-lying ²Σ and ²Π states of diatomic molecules. I. Spin-splitting of the ²Σ levels, Mol. Phys., 1971, 20, 1057. [all data]

Watson and Fredrickson, 1932
Watson, W.W.; Fredrickson, W.R., The spectrum of strontium hydride, Phys. Rev., 1932, 39, 765. [all data]

Veseth, 1971, 2
Veseth, L., An investigation of the interaction between close-lying ²Σ and ²Π states of diatomic molecules. II. Λ-doubling of the ²Π levels, Mol. Phys., 1971, 21, 287. [all data]

Veseth, 1971, 3
Veseth, L., Corrections to the spin-orbit splitting in ²Π states of diatomic molecules, J. Mol. Spectrosc., 1971, 38, 228. [all data]

Edvinsson, Kopp, et al., 1963
Edvinsson, G.; Kopp, I.; Lindgren, B.; Aslund, N., Rotational analysis of an ultraviolet system of the hydrides and deuterides of Ca, Sr and Ba, Ark. Fys., 1963, 25, 95. [all data]

Notes

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

Symbols used in this document:

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
Customer support for NIST Standard Reference Data products.