Samarium(III) sulfide

Samarium(III) sulfide  Names

Other names

disamarium trisulphide; Samarium sesquisulfide

Identifiers

CAS Number

* 12067-22-0 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 145783

ECHA InfoCard | 100.031.875
EC Number |

* 235-076-6

PubChem CID

* 166593

CompTox Dashboard (EPA)

* DTXSID90923512

InChI

* InChI=1S/3S.2Sm/q3*-2;2*+3

SMILES

* [S-2].[S-2].[S-2].[Sm+3].[Sm+3]

Properties

Chemical formula

| Sm2S3
Molar mass | 396.915 g/mol
Appearance  | red-brown crystals
Density | 5.87 g/cm3, solid
Melting point | 1,720 °C (3,130 °F; 1,990 K)
Band gap | 1.71 eV

Magnetic susceptibility (χ)

| +3300.0·10−6 cm3/mol
Structure

Crystal structure

| orthorhombic

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

N verify (what is YN ?)

Infobox references

Chemical compound

Samarium(III) sulfide (Sm2S3) is a chemical compound of the rare earth element samarium, and sulfur. In this compound samarium is in the +3 oxidation state, and sulfur is an anion in the −2 state.

## Production[edit]

One way to make Samarium(III) sulfide is to heat samarium metal with sulfur. Another way to make a thin film is to alternatively soak in samarium(III) chloride tartaric acid complex, and sodium thiosulfate.[1]

## Properties[edit]

The low temperature α form crystallises in the orthorhombic crystal system. The unit cell has dimensions a=7.376, b=3.9622 c=15.352 Å with volume 448.7 Å3. There are four of the formula in each unit cell (Sm8S12). The density comes out to 5.88 kg/liter. There are two kinds of samarium coordination in the solid, one is eight coordinated with sulfur surrounding in a bicapped trigonal pyramid. The other is a sevenfold capped distorted octahedral arrangement. This structure is similar to other light rare-earth element sulfides.[2]

Samarium(III) sulfide is a semiconductor with a band gap of 1.7 eV.[3] As a thin film on high area electrodes, it is under investigation as a super capacitor dielectric, with specific capacitances of up to 360 Farads per gram.[4]

## Related[edit]

Related samarium sulfides include the monosulfide SmS and the mixed valent Sm3S4 which are also semiconductors.[5] KSm2CuS6 is a layered quaternary sulfide.[6]

## References[edit]

1. ^ Kumbhar, V.S.; Jagadale, A.D.; Lokhande, C.D. (July 2013). "Supercapacitive evaluation of soft chemically deposited α-Sm2S3 thin films". Journal of Power Sources. 234: 107–110. doi:10.1016/j.jpowsour.2013.01.078.
2. ^ Aruga, Atsushi; Tsujimi, Sachiko; Nakai, Izumi (1996). "Crystal Structure of Samarium Sesquisulfide, α-Sm2S3". Analytical Sciences. 12 (1): 151–152. doi:10.2116/analsci.12.151.
3. ^ Marin, Chris M.; Wang, Lu; Brewer, Joseph R.; Mei, Wai-Ning; Cheung, Chin Li (June 2013). "Crystalline α-Sm2S3 nanowires: Structure and optical properties of an unusual intrinsically degenerate semiconductor". Journal of Alloys and Compounds. 563: 293–299. doi:10.1016/j.jallcom.2013.02.082.
4. ^ Ghogare, T.T.; Lokhande, V.C.; Ji, T.; Patil, U.M.; Lokhande, C.D. (June 2020). "A graphene oxide /samarium sulfide (GO/Sm2S3) composite thin film: Preparation and electrochemical study". Surfaces and Interfaces. 19: 100507. doi:10.1016/j.surfin.2020.100507. S2CID 216370577.
5. ^ Wang, Lu; Marin, Chris; Mei, Wai-Ning; Cheung, Chin (31 May 2015). "Electronic structures of lanthanum, samarium, and gadolinium sulfides". AIMS Materials Science. 2 (2): 97–105. doi:10.3934/matersci.2015.2.97.
6. ^ Pomelova, Tatiana A.; Podlipskaya, Tatiana Yu.; Kuratieva, Natalia V.; Cherkov, Alexander G.; Nebogatikova, Nadezhda A.; Ryzhikov, Maxim R.; Huguenot, Arthur; Gautier, Régis; Naumov, Nikolay G. (2018-11-05). "Synthesis, Crystal Structure, and Liquid Exfoliation of Layered Lanthanide Sulfides KLn 2 CuS 6 (Ln = La, Ce, Pr, Nd, Sm)". Inorganic Chemistry. 57 (21): 13594–13605. doi:10.1021/acs.inorgchem.8b02213. ISSN 0020-1669. PMID 30354089. S2CID 53026735.

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Samarium compounds

Samarium(II)|

* PtSm
* SmF2
* SmCl2
* SmBr2
* SmB6
* SmI2
* SmS
* SmSe
* SmP
* SmTe

Samarium(III)|

* Sm(CH3COO)3
* SmAs
* SmAsO4
* SmCl3
* SmBr3
* SmF3
* SmI3
* Sm2O3
* SmOI
* Sm2S3
* Sm(OH)3
* SmN
* Sm(NO3)3
* SmPO4
* Sm2(MoO4)3
* SmSb
* Sm(ClO4)3
* Sm(C5H7O2)3

| Organosamarium(III)|

* Sm2(C2O4)3

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Sulfides (S2−)

| H2S |  |  |  | He

|
|
|
|

Li2S | BeS | B2S3
+BO3 | CS2
COS | (NH4)SH | O  | F  | Ne
Na2S | MgS | Al2S3 | SiS
SiS2
-Si | PxSy
-P | -S2−
2 | Cl  | Ar
K2S | CaS |  | ScS
Sc2S3 | TiS
TiS2
Ti2S3 | VS
VS2
V2S3 | CrS
Cr2S3 | MnS
MnS2 | FeS
Fe3S4 | CoS | NiS | Cu2S
CuS | ZnS | GaS
Ga2S3 | GeS
GeS2
-Ge | As2S3
As4S3
-As | SeS2
+Se | Br  | Kr
Rb2S | SrS |  | Y2S3 | ZrS2 | NbS2 | MoS2 | Tc  | Ru  | Rh2S3 | PdS | Ag2S | CdS | In2S3 | SnS
SnS2
-Sn | Sb2S3
Sb2S5
-Sb | TeS2 | I  | Xe
Cs2S | BaS | *  | LuS
Lu2S3 | HfS2 | TaS2 | WS2
WS3 | ReS2
Re2S7 | OsS
4 | Ir2S3
IrS2 | PtS
PtS2 | Au2S
Au2S3 | HgS | Tl2S | PbS
PbS2 | Bi2S3 | PoS | At  | Rn
Fr  | Ra  | **  | Lr  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og

*  | LaS
La2S3 | CeS
Ce2S3 | PrS
Pr2S3 | NdS
Nd2S3 | Pm2S3 | SmS
Sm2S3 | EuS
Eu2S3 | GdS
Gd2S3 | TbS
Tb2S3 | DyS
Dy2S3 | HoS
Ho2S3 | ErS
Er2S3 | TmS
Tm2S3 | YbS
Yb2S3
**  | Ac2S3 | ThS2 | Pa  | US
US2 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No

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