Lead(II) iodide

Lead(II) iodide
	Lead(II) iodide
Names
	Other names Plumbous iodide
Identifiers
CAS Number	10101-63-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	23305 ;
ECHA InfoCard	100.030.220
EC Number	233-256-9;
PubChem CID	24931;
UNII	OTL90F2GLT ;
UN number	2291 3077
CompTox Dashboard (EPA)	DTXSID101014310 ;
	InChI InChI=1S/2HI.Pb/h21H;/q;;+2/p-2 Key: RQQRAHKHDFPBMC-UHFFFAOYSA-L ; InChI=1/2HI.Pb/h21H;/q;;+2/p-2 Key: RQQRAHKHDFPBMC-NUQVWONBAP;
	SMILES I[Pb]I;
Properties
Chemical formula	PbI; 2
Molar mass	461.01 g/mol
Appearance	bright yellow powder
Odor	odorless
Density	6.16 g/cm3
Melting point	410 °C (770 °F; 683 K)
Boiling point	872 °C (1,602 °F; 1,145 K) decomp.
Solubility in water	0.44 g/L (0 °C); 0.76 g/L (20 °C); 4.1 g/L (100 °C);
Solubility product (Ksp)	4.41×10−9 (20 °C)
Solubility	insoluble in ethanol, cold HCl; soluble in alkalis, KI solution, methyl isopropyl ketone;
Band gap	2.34 eV (direct)
Magnetic susceptibility (χ)	−126.5·10−6 cm3/mol
Structure
Crystal structure	Hexagonal hP6
Space group	P63mc, No. 186
Lattice constant	a = 0.4556 nm, b = 0.4556 nm, c = 1.3973 nm α = 90°, β = 90°, γ = 120°°
Formula units (Z)	2
Coordination geometry	octahedral
Thermochemistry
Heat capacity (C)	77.4 J/(mol·K)
Std molar; entropy (S⦵298)	174.9 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	-175.5 kJ/mol
Gibbs free energy (ΔfG⦵)	-173.6 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H332, H360, H373, H410
Precautionary statements	P201, P202, P260, P261, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501
NFPA 704 (fire diamond)	3 0 0
Flash point	Non-flammable
Related compounds
Other anions	Lead(II) fluoride; Lead(II) chloride; Lead(II) bromide;
Other cations	Tin(II) iodide
Related compounds	Thallium(I) iodide; Bismuth(III) iodide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Lead(II) iodide (or lead iodide) is a chemical compound with the formula PbI
₂. At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated.^[11] It was formerly called plumbous iodide.

The compound currently has a few specialized applications, such as the manufacture of solar cells,^[12] X-rays and gamma-ray detectors.^[13] Its preparation is an entertaining and popular demonstration in chemistry education, to teach topics such as precipitation reactions and stoichiometry.^[14] It is decomposed by light at temperatures above 125 °C (257 °F), and this effect has been used in a patented photographic process.^[4]^[15]

Lead iodide was formerly employed as a yellow pigment in some paints, with the name iodide yellow. However, that use has been largely discontinued due to its toxicity and poor stability.^[16]

^ ^a ^b ^c ^d ^e Haynes (2016), p. 4.69.
^ Clever, H. L.; Johnston, F. J. (1980). "The Solubility of Some Sparingly Soluble Lead Salts: An Evaluation of the Solubility in Water and Aqueous Electrolyte Solution" (PDF). J. Phys. Chem. Ref. Data (NIST data review). 9 (3): 751–784. Bibcode:1980JPCRD...9..751C. doi:10.1063/1.555628. Archived from the original (PDF) on 2014-02-11. Retrieved 2017-07-13.
^ Haynes (2016), p. 5.171.
^ ^a ^b Cite error: The named reference patnaik was invoked but never defined (see the help page).
^ Cite error: The named reference west was invoked but never defined (see the help page).
^ Ahuja, R.; Arwin, H.; Ferreira Da Silva, A.; Persson, C.; Osorio-Guillén, J. M.; Souza De Almeida, J.; Moyses Araujo, C.; Veje, E.; Veissid, N.; An, C. Y.; Pepe, I.; Johansson, B. (2002). "Electronic and optical properties of lead iodide". Journal of Applied Physics. 92 (12): 7219–7224. Bibcode:2002JAP....92.7219A. doi:10.1063/1.1523145. hdl:10495/11556. S2CID 29398039.
^ Zhong, Mianzeng; Zhang, Shuai; Huang, Le; You, Jingbi; Wei, Zhongming; Liu, Xinfeng; Li, Jingbo (2017). "Large-scale 2D PbI₂ monolayers: experimental realization and their indirect band-gap related properties". Nanoscale. 9 (11): 3736–3741. doi:10.1039/c6nr07924e. PMID 28102404.
^ Haynes (2016), p. 4.128.
^ Brixner, L.H.; Chen, H.-Y.; Foris, C.M. (1981). "X-ray study of the PbCl_2−xI_x and PbBr_2−xI_x systems". Journal of Solid State Chemistry. 40 (3): 336–343. Bibcode:1981JSSCh..40..336B. doi:10.1016/0022-4596(81)90400-X.
^ Haynes (2016), p. 5.24.
^ Cite error: The named reference sigma was invoked but never defined (see the help page).
^ Cite error: The named reference Dhiaputra was invoked but never defined (see the help page).
^ Cite error: The named reference Shah was invoked but never defined (see the help page).
^ Cite error: The named reference anthony was invoked but never defined (see the help page).
^ Cite error: The named reference patphot was invoked but never defined (see the help page).
^ Cite error: The named reference Eastaugh was invoked but never defined (see the help page).

[FOOTNOTEHaynes20164.69-1] Haynes (2016), p. 4.69.

[2] Clever, H. L.; Johnston, F. J. (1980). "The Solubility of Some Sparingly Soluble Lead Salts: An Evaluation of the Solubility in Water and Aqueous Electrolyte Solution" (PDF). J. Phys. Chem. Ref. Data (NIST data review). 9 (3): 751–784. Bibcode:1980JPCRD...9..751C. doi:10.1063/1.555628. Archived from the original (PDF) on 2014-02-11. Retrieved 2017-07-13.

[FOOTNOTEHaynes20165.171-3] Haynes (2016), p. 5.171.

[patnaik-4] Cite error: The named reference patnaik was invoked but never defined (see the help page).

[west-5] Cite error: The named reference west was invoked but never defined (see the help page).

[6] Ahuja, R.; Arwin, H.; Ferreira Da Silva, A.; Persson, C.; Osorio-Guillén, J. M.; Souza De Almeida, J.; Moyses Araujo, C.; Veje, E.; Veissid, N.; An, C. Y.; Pepe, I.; Johansson, B. (2002). "Electronic and optical properties of lead iodide". Journal of Applied Physics. 92 (12): 7219–7224. Bibcode:2002JAP....92.7219A. doi:10.1063/1.1523145. hdl:10495/11556. S2CID 29398039.

[7] Zhong, Mianzeng; Zhang, Shuai; Huang, Le; You, Jingbi; Wei, Zhongming; Liu, Xinfeng; Li, Jingbo (2017). "Large-scale 2D PbI₂ monolayers: experimental realization and their indirect band-gap related properties". Nanoscale. 9 (11): 3736–3741. doi:10.1039/c6nr07924e. PMID 28102404.

[FOOTNOTEHaynes20164.128-8] Haynes (2016), p. 4.128.

[str-9] Brixner, L.H.; Chen, H.-Y.; Foris, C.M. (1981). "X-ray study of the PbCl_2−xI_x and PbBr_2−xI_x systems". Journal of Solid State Chemistry. 40 (3): 336–343. Bibcode:1981JSSCh..40..336B. doi:10.1016/0022-4596(81)90400-X.

[FOOTNOTEHaynes20165.24-10] Haynes (2016), p. 5.24.

[sigma-11] Cite error: The named reference sigma was invoked but never defined (see the help page).

[Dhiaputra-12] Cite error: The named reference Dhiaputra was invoked but never defined (see the help page).

[Shah-13] Cite error: The named reference Shah was invoked but never defined (see the help page).

[anthony-14] Cite error: The named reference anthony was invoked but never defined (see the help page).

[patphot-15] Cite error: The named reference patphot was invoked but never defined (see the help page).

[Eastaugh-16] Cite error: The named reference Eastaugh was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker.

Lead(II) iodide

Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.