lead selenide

Formula: PbSe
Molecular weight: 286.2
CAS Registry Number: 12069-00-0
Information on this page:
Other data available:
- Phase change data
- Gas phase ion energetics data
Data at other public NIST sites:
- Microwave spectra (on physics lab web site)
- X-ray Photoelectron Spectroscopy Database, version 5.0
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 ⁽²⁰⁸⁾Pb⁽⁸⁰⁾Se
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
F	45220.9	224.8 H	0.50								F ← X R	45194.5 H
F	↳Sharma, 1946; missing citation
D	28418.0	190.4 H	0.53	-0.004							D ↔ X R	28374.4 H
D	↳missing citation; Vago and Barrow, 1947
C	23315.7	183.0 H	0.25								C ← X R	23268.5 H
C	↳Walker, Straley, et al., 1938
B	21005.8	184.8 H	0.43								B ← X R	20959.4 H
B	↳Walker, Straley, et al., 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
A	18716.8	166.9 H	0.14								A ← X 1 R	18661.5 H
A	↳Walker, Straley, et al., 1938
X ¹Σ⁺	0	277.6 2 H	0.51 2		0.05059953 3	0.00012993	-0.000000111	0.70E-8		2.402233 4
	↳Marino, Guerin, et al., 1974
	Rotation sp. 5
	↳Hoeft and Mann, 1966

Notes

Also observed as laser-excited emission in Ne matrices Teichman and Nixon, 1975.

Average of Walker, Straley, et al., 1938 and Barrow and Vago, 1944.

Rotational constants of ²⁰⁸Pb⁸⁰Se; data for fourteen other isotopic species Hoeft and Mann, 1966.

Vibration sp. 7

Dipole moment of ²⁰⁸Pb⁸⁰Se, μ_el(v=0) = -3.2₈ D Hoeft, Lovas, et al., 1970, from Stark effect measurements on microwave transitions.

Thermochemical value Uy and Drowart, 1969 [based on D₀⁰(Se₂) = 3.41 eV Uy and Drowart, 1969]. This value agrees well with D₀⁰ = 3.10 eV Vago and Barrow, 1947 derived from a dissociation limit at 2870 Å Vago and Barrow, 1947 if dissociated into ³P₁ + ³P₁ is assumed.

In Ar matrix at 12 K.

References

Go To: Top, Constants of diatomic molecules, Notes

Sharma, 1946
Sharma, D., Some new ultra-violet band systems of selenides and tellurides of tin and lead, Nature (London), 1946, 157, 663. [all data]

Vago and Barrow, 1947
Vago, E.E.; Barrow, R.F., Ultra-violet absorption band-systems of PbO, PbS, PbSe and PbTe, Proc. Phys. Soc. London, 1947, 59, 449. [all data]

Walker, Straley, et al., 1938
Walker, J.W.; Straley, J.W.; Smith, A.W., Band spectra of PbSe, SnSe and PbTe in absorption, Phys. Rev., 1938, 53, 140. [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 and Mann, 1966
Hoeft, J.; Mann, K., Das Mikrowellenrotationsspektrum des PbSe, Z. Naturforsch. A, 1966, 21, 1884. [all data]

Teichman and Nixon, 1975
Teichman, R.A., III; Nixon, E.R., The A → X emission spectra of PbS and PbSe in neon matrices: enhanced emission from isotopes and matrix sites, J. Mol. Spectrosc., 1975, 57, 14. [all data]

Barrow and Vago, 1944
Barrow, R.F.; Vago, E.E., An emission band-system of PbSe, Proc. Phys. Soc. London, 1944, 56, 76. [all data]

Hoeft, Lovas, et al., 1970
Hoeft, J.; Lovas, F.J.; Tiemann, E.; Torring, T., Elektrisches Dipolmoment von GeSe, GeTe, PbSe und PbTe, Z. Naturforsch. A, 1970, 25, 539. [all data]

Uy and Drowart, 1969
Uy, O.M.; Drowart, J., Mass spectrometric determination of the dissociation energies of the molecules BiO, BiS, BiSe and BiTe, J. Chem. Soc. Faraday Trans., 1969, 65, 3221. [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.