Diantimony

Formula: Sb₂
Molecular weight: 243.520
CAS Registry Number: 32679-33-7
Information on this page:
Other data available:
- Gas phase ion energetics data
Options:
- Switch to calorie-based units

Constants of diatomic molecules

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

Data collected through July, 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 ^(121,123)Sb₂
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 other emission band systems 11900 - 13900 (V shaded), 23800 - 27800, 33300 - 34500 cm^-1 (R shaded).
↳Mrozowski and Santaram, 1967
U	(70194)	[272] 1 2									U ← X	70195
U	↳Donovan and Strachan, 1971
M	(63258)	[152] 3 H 4									M ← X	63199 H
M	↳Donovan and Strachan, 1971
I	(59142)	[210] 5 H 6									I ← X	59112 H
I	↳Donovan and Strachan, 1971
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
G	(53888)	[185] 7 H									G ← X R	53846 H
G	↳missing citation; Topouzkhanian, Sibai, et al., 1974; Sibai, Topouzkhanian, et al., 1975
E	(48645)	[228] 8 H 9									E ← X	48624 H
E	↳missing citation; Topouzkhanian, Sibai, et al., 1974
F	44780	226.0 10 H	1.17								(F ← X) (R)	44758 H
F	↳Nakamura and Shidel, 1935; Topouzkhanian, Sibai, et al., 1974
H	(44329)	[479] 11 H 12									H ← X V	(44433) 11 H
H	↳Sibai, Topouzkhanian, et al., 1975
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
D	(32087)	[209.6] 13 H									D ↔ X R	32057 H
D	↳Naude, 1935; Mrozowski and Santaram, 1967
B 0_u⁺	19068.9	218.0₈ H	0.53₇		B₂ = 0.044844 14			D₂ = 9.2E-9		r₂ = 2.4835	B ↔ X R	19043.0 H
B 0_u⁺	↳Almy, 1937; Almy and Schultz, 1937; Sfeila, Perdigon, et al., 1972
A	14991	217.2 H	0.44								A ↔ X R	14965 H
A	↳Almy, 1937; Almy and Schultz, 1937
X ¹Σ_g⁺	0	269.9₈ H	0.58₈		B₂ = 0.050447 14			D₂ = 9.5E-9		r₂ = 2.3415

Notes

ΔG(3/2) = 254.

Weak diffuse bands.

ΔG(3/2) = 149.

Three sharp bands.

ΔG(3/2)= 216,ΔG(5/2)= 217.

Weak system.

ΔG(3/2,5/2) = 195,205 Topouzkhanian, Sibai, et al., 1974; G(7/2) = 196 47. Bands of ¹²¹Sb₂ Sibai, Topouzkhanian, et al., 1975.

ΔG(3/2)= 216 Donovan and Strachan, 1971,ΔG(5/2)= 217 Donovan and Strachan, 1971, ΔG(7/2)= 220 Donovan and Strachan, 1971,ΔG(9/2)= 246 Donovan and Strachan, 1971 [flash photolysis of SbH₃]; Topouzkhanian, Sibai, et al., 1974 [high tempereature absorption] give no assignments.

Three bands appear diffuse.

Topouzkhanian, Sibai, et al., 1974 express doubts about the correctness of the analysis.

ΔG(3/2) = 541, ΔG(5/2)= 528, ΔG(7/2)= 477, ΔG(9/2)= 517, ΔG(11/2)= 548, ΔG(13/2)= 472. The constants assume v'=0,v"=2 for the first band at 43897 cm^-1.

Single progression, observed in ¹²¹Sb₂.

Levels up to v'=17 have been observed; the ΔG values are irregular due to perturbations and vary between 208 and 228. Nakamura and Shidel, 1935 give different assignments and constants.

Constants for ^121,123Sb₂ from the rotational analysis of the B → X 2-2 band by Sfeila, Perdigon, et al., 1972 who give also constants for ¹²¹Sb₂ and ¹²³Sb₂.

Thermochemical value (mass-spectrometry) DeMaria, Drowart, et al., 1959, Kordis and Gingerich, 1973.

References

Go To: Top, Constants of diatomic molecules, Notes

Mrozowski and Santaram, 1967
Mrozowski, S.; Santaram, C., Electronic spectra of P₂, As₂, and Sb₂ molecules, J. Opt. Soc. Am., 1967, 57, 522. [all data]

Donovan and Strachan, 1971
Donovan, R.J.; Strachan, P., Vacuum U.-V. spectra of transient molecules and radicals, J. Chem. Soc. Faraday Trans., 1971, 67, 3407. [all data]

Topouzkhanian, Sibai, et al., 1974
Topouzkhanian, A.; Sibai, A.M.; d'Incan, J., Observation et analyse vibrationnelle de nouveauz systemes de bandes d'absorption de molecules lourdes dans l'ultraviolet lointain Cas de Sb₂ et Bi₂, Z. Naturforsch. A, 1974, 29, 436. [all data]

Sibai, Topouzkhanian, et al., 1975
Sibai, A.M.; Topouzkhanian, A.; d'Incan, J., Nouveau systeme de bandes dans le spectre d'absorption de la molecule d'antimoine isotopique (Sb₁₂₁-Sb₁₂₁) entre 1 840 et 2 350 Å, C.R. Acad. Sci. Paris, Ser. B, 1975, 280, 79. [all data]

Nakamura and Shidel, 1935
Nakamura, G.; Shidel, T., 3. The band spectra of elements of the fifth group, Jpn. J. Phys., 1935, 10, 11. [all data]

Naude, 1935
Naude, S.M., The absorption spectrum of the diatomic antimony molecule (Sb₂), South Afr. J. Sci., 1935, 32, 103-112. [all data]

Almy, 1937
Almy, G.M., Spectra of diatomic molecules of elements of the fifth group, J. Phys. Chem., 1937, 41, 47. [all data]

Almy and Schultz, 1937
Almy, G.M.; Schultz, H.A., Two new band systems of diatomic antimony, Phys. Rev., 1937, 51, 62. [all data]

Sfeila, Perdigon, et al., 1972
Sfeila, J.; Perdigon, P.; Martin, F.; Femelat, B., The B → X system of diatomic antimony, J. Mol. Spectrosc., 1972, 42, 239. [all data]

DeMaria, Drowart, et al., 1959
DeMaria, G.; Drowart, J.; Inghram, M.G., Thermodynamic study of InSb with a mass spectrometer, J. Chem. Phys., 1959, 31, 1076. [all data]

Kordis and Gingerich, 1973
Kordis, J.; Gingerich, K.A., Mass spectroscopic investigation of the equilibrium dissociation of gaseous Sb₂, Sb₃, Sb₄, SbP, SbP₃, and P₂, J. Chem. Phys., 1973, 58, 5141. [all data]

Notes

Go To: Top, Constants of diatomic molecules, References

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.