Lanthanum oxysulfide

Lanthanum oxysulfide  Names

Other names

lanthanum(3+); oxygen(2-); sulfide, lanthanum oxide sulfide, dilanthanum dioxide sulphide[1]

Identifiers

CAS Number

* 13825-07-5 Y

3D model (JSmol)

* Interactive image

ECHA InfoCard | 100.031.578
EC Number |

* 234-750-7

PubChem CID

* 9949910

CompTox Dashboard (EPA)

* 601014208

InChI

* InChI=1S/2La.2O.S/q2*+3;3*-2

Key: BZXKASZNANQGJD-UHFFFAOYSA-N

SMILES

* [O-2].[O-2].[S-2].[La+3].[La+3]

Properties

Chemical formula

| La

Molar mass | 341.88 g/mol
Appearance  | yellowish-white crystals
Density | 5.77 g/cm3
Related compounds

Related compounds

| Gadolinium oxysulfide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Chemical compound

Lanthanum oxysulfide is an inorganic compound, a salt of lanthanum and hydrogen sulfide acid, with the formula La

2S.[2][3]

## Synthesis

[edit]

* Calcination of lanthanum(III) sulfate in oxygen current at 750 °C:[4]

La2(SO4)3 \+ O2 → La2O3*SO3 \+ 2SO3

* The resulting product is reduced with hydrogen when heated:

La2O3*SO3 \+ 4H2 → La2O2S + 4H2O

## Physical properties

[edit]

The compound forms yellowish-white hexagonal crystals.

## Uses

[edit]

The compound is used as a laser host material.[5]

## References

[edit]

1. ^ "Lanthanum Oxysulfide | CAS 12031-43-5 | Lorad Chemical Corporation". Lorad Chemical. Retrieved 21 March 2023.
2. ^ "CAS 12031-43-5 Lanthanum oxide sulfide(La2O2S) - Alfa Chemistry". Alfa Chemistry. Retrieved 21 March 2023.
3. ^ "Lanthanum Oxysulfide". American Elements. Retrieved 21 March 2023.
4. ^ Pitha, John J.; Smith, Arthur L.; Ward, Roland (1947). "The Preparation of Lanthanum Oxysulfide and its Properties as a Base Material for Phosphors Stimulated by Infrared". J. Am. Chem. Soc. 69 (8): 1870–1871. doi:10.1021/ja01200a009. Retrieved 21 March 2023.
5. ^ Koechner, Walter (11 November 2013). Solid-State Laser Engineering. Springer Science+Business Media. p. 32\. ISBN 978-3-662-14105-2. Retrieved 21 March 2023.

* v
* t
* e

Lanthanum compounds

* La(CH
3COO)

* La(C5H7O2)3
* LaAlO3
* LaB6
* LBCO
* LaBr3
* LaC2
* LaCl3
* La2(CO3)3
* LaCoO3
* C
36H
72LaO

* LaF3
* LaH10
* La2Hf2O7
* La(IO3)3
* LaI3
* LaN
* LaMnO3
* LaNix (LaNi5)
* La(NO3)3
* La
2(C

* La2O3
* LaOF
* La

* La(OH)3
* LaP
* La2Te3
* LaYbO3
* LLZO
* LSAT
* LSCF
* LSM
* C
54H
105LaO

* LaS
* La2S3

* v
* t
* e

Sulfur compounds

Sulfides and
disulfides|

* Al2S3
* As2S2
* As2S3
* As2S5
* As4S4
* Au2S
* Au2S3
* B2S3
* BaS
* BeS
* Bi2S3
* CS2
* C3S2
* C6S6
* CaS
* CdS
* CeS
* CoS
* Cr2S3
* CSSe
* CSTe
* CuFeS2
* CuS
* D2S
* Dy2S3
* Er2S3
* EuS
* FeS2
* GaS
* H2S
* HfS2
* HgS
* In2S3
* K2S
* LaS
* LiS
* MgS
* MoS2
* MoS3
* NaHS
* Na2S
* NH4HS
* NiS
* P4Sx
* PbS
* PbS2
* PSCl3
* PSI3
* PtS
* ReS2
* Re2S7
* SiS
* SrS
* TlS
* VS
* SeS2
* S2U
* WS2
* WS3
* Sb2S3
* Sb2S5
* Sb4S3O3
* Sm2S3
* Y2S3
* ZrS2
* La

* Gd

Sulfur halides|

* S2Br2
* SBr2
* S2Cl2
* SCl2
* SCl4
* SF2
* SF4
* S2F10
* SF6
* S2I2

Sulfur oxides
and oxyhalides|

* SO2
* SO3
* SOBr2
* SOCl2
* SOF2
* SOF4
* H2S3O6
* H2SO3
* H2SO4
* H2S2O7
* H2SO5

| Sulfites|

* CdSO3
* K2SO3

|

Sulfates|

* Ag2SO4
* CaSO4
* CuSO4
* Cs2SO4
* Er2(SO4)3
* Eu2(SO4)3
* HgSO4
* K2SO4
* KAl(SO4)2
* NaAl(SO4)2
* RaSO4
* SnSO4
* SrSO4
* Ti(SO4)2
* Tm2(SO4)3
* Yb2(SO4)3
* Zr(SO4)2

Sulfur nitrides|

* SN
* S2N2
* S4N4

Thiocyanates|

* HSCN
* KSCN
* Co(SCN)2

Organic compounds|

* C2H4S
* C2H6S3
* C4H4S
* C32H66S2
* CHCl3S
* C2H3SN

*[CID]: Compound ID
*[EPA]: U.S. Environmental Protection Agency
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