germanium sulphide

Formula: GeS
Molecular weight: 104.70
IUPAC Standard InChI: InChI=1S/GeH2S/c1-2/h1H2
IUPAC Standard InChIKey: UQMCSSLUTFUDSN-UHFFFAOYSA-N
CAS Registry Number: 12025-32-0
Chemical structure:
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Other names: Germanium monosulfide
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Gas phase ion energetics data

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Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV)	Method	Reference	Comment
10.5	EI	Balducci, Sacconi, et al., 1991	LL
9.98 ± 0.02	PI	Drowart, Smets, et al., 1978	LLK
10.36	PE	White, Rosenberg, et al., 1979	Vertical value; LLK
10.18 ± 0.03	PI	Drowart, Smets, et al., 1978	Vertical value; LLK
10.35 ± 0.08	PI	Drowart, Smets, et al., 1978	Vertical value; LLK
10.39	PE	Wu and Fehlner, 1976	Vertical value; LLK
10.9 ± 0.5	EI	Wu and Fehlner, 1976	Vertical value; LLK
10.25	PE	Wu and Fehlner, 1976	Vertical value; LLK

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
Ge⁺	14.5	S	EI	Balducci, Sacconi, et al., 1991	LL
Ge⁺	13.51 ± 0.03	S	PI	Drowart, Smets, et al., 1978	LLK
S⁺	18.0	Ge	EI	Balducci, Sacconi, et al., 1991	LL

Constants of diatomic molecules

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

Data collected through September, 1976

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 ⁷⁴Ge³²S
State	T_e	ω_e	ω_ex_e	B_e	α_e	D_e	β_e	r_e	Trans.	ν₀₀
E	38884.8	310.3 H	1.43 1						E ← X R	38752.1 H
E	↳Shapiro, Gibbs, et al., 1932; missing citation
A ¹Π	32889.5	375.0 H	1.51						A ↔ X R	32789.2 H
A ¹Π	↳Shapiro, Gibbs, et al., 1932; missing citation; missing citation
a (³Π)									a → X	(22400) 2
a (³Π)	↳Meyer, Jones, et al., 1971
X ¹Σ⁺	0	575.8 H	1.80	0.18656575₇	0.00074910₃ 3	7.883E-8	1E-10	2.012086 4 5
	↳Marino, Guerin, et al., 1974
								6
	↳Hoeft, Lovas, et al., 1969; Stieda, Tiemann, et al., 1976

Notes

Extended progression (v"=0) converging to 46715 cm^-1. The vibrational constants given represent this progression up to v'=17 only.

Extrapolated from observed phosphorescence spectra in various solid matrices at low temperature Meyer, Jones, et al., 1971. Lifetime in these matrices Meyer, Smith, et al., 1970.

α_v= -4.4E-8(v+1/2)² - 2.8E-9(v+1/2)³.

From the effective B_e; 2.012043 Å at the minimum of the Born-Oppenheimer potential curve, see Stieda, Tiemann, et al., 1976.

IR sp. 8

Microwave sp. 9

Thermochemical value (mass-spectrom.) Coppens, Smoes, et al., 1967. The convergence limit in E-X, assuming dissociation into ³P + ³P, gives 5.6₆ ± 0.13 eV, the error being due to the uncertainty with regard to the particular triplet components involved.

In low-temperature argon and nitrogen matrices.

μ_el(v=0)= 2.00 D Hoeft, Lovas, et al., 1969 from Stark effect of microwave spectrum Hoeft, Lovas, et al., 1969. Quadrupole hyperfine structure for isotopic molecules with nuclear spins I ≥ 1 Hoeft, Lovas, et al., 1970.

References

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Balducci, Sacconi, et al., 1991
Balducci, G.; Sacconi, L.V.; Gigli, G., The dimerization energies of the Ge₂S₂, Ge₂Se₂, and Ge₂Te₂ molecules, Ber. Bunsen-Ges. Phys. Chem., 1991, 95, 1651. [all data]

Drowart, Smets, et al., 1978
Drowart, J.; Smets, J.; Reynaert, J.C.; Coppens, P., Mass spectrometric study of the photoionization of inorganic gases vapours, Adv. Mass Spectrom., 1978, 7, 647. [all data]

White, Rosenberg, et al., 1979
White, M.G.; Rosenberg, R.A.; Lee, S.T.; Shirley, D.A., The He(I) photoelectron spectroscopy of heavy group IV-VI diatomics, J. Electron Spectrosc. Relat. Phenom., 1979, 17, 323. [all data]

Wu and Fehlner, 1976
Wu, M.; Fehlner, T.P., Valence level photoelectron spectra of some heavy group 4-6 diatomic molecules, J. Am. Chem. Soc., 1976, 98, 7578. [all data]

Shapiro, Gibbs, et al., 1932
Shapiro, C.V.; Gibbs, R.C.; Laubengayer, A.W., Absorption band spectra of germanous sulfide: the isotopic constitution of germanium, Phys. Rev., 1932, 40, 354. [all data]

Meyer, Jones, et al., 1971
Meyer, B.; Jones, Y.; Smith, J.J.; Spitzer, K., The spectrum of matrix-isolated GeO and GeS, J. Mol. Spectrosc., 1971, 37, 100. [all data]

Marino, Guerin, et al., 1974
Marino, C.P.; Guerin, J.D.; Nixon, E.R., Infrared spectra of some matrix-isolated germanium, tin, and lead chalcogenides, J. Mol. Spectrosc., 1974, 51, 160. [all data]

Hoeft, Lovas, et al., 1969
Hoeft, J.; Lovas, F.J.; Tiemann, E.; Tischer, R.; Torring, T., Elektrisches Dipolmoment und Mikrowellenrotationsspektrum des GeO und GeS, Z. Naturforsch. A, 1969, 24, 1217. [all data]

Stieda, Tiemann, et al., 1976
Stieda, W.U.; Tiemann, E.; Torring, T.; Hoeft, J., Adiabatische Korrektur der Born-Oppenheimer-Naherung beim GeS und GeSe, Z. Naturforsch. A, 1976, 31, 374. [all data]

Meyer, Smith, et al., 1970
Meyer, B.; Smith, J.J.; Spitzer, K., Phosphorescent decay time of matrix-isolated GeO, GeS, SnO, and SnS, and the lifetime of the Cameron bands of CO-type diatomics, J. Chem. Phys., 1970, 53, 3616-3620. [all data]

Coppens, Smoes, et al., 1967
Coppens, P.; Smoes, S.; Drowart, J., Mass spectrometric determination of the dissociation energies of the molecules GeS, ScS, YS, LaS, and CeS, Trans. Faraday Soc., 1967, 63, 2140. [all data]

Hoeft, Lovas, et al., 1970
Hoeft, J.; Lovas, J.; Tiemann, E.; Torring, T., Dipole moments and hyperfine structure of the group IV/VI diatomic molecules, J. Chem. Phys., 1970, 53, 2736. [all data]

Notes

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Symbols used in this document:

AE Appearance energy
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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