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{{chembox |
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| verifiedrevid = 353092425 |
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| Name = Samarium(III) sulfide |
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| verifiedrevid = 439134124 |
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| ImageFile = |
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| Name = Samarium(III) sulfide |
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| ImageName = Samarium(III) sulfide |
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| ImageName = Samarium(III) sulfide |
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| OtherNames = |
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| OtherNames =disamarium trisulphide; Samarium sesquisulfide |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|??}} |
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| CASNo = 12067-22-0 |
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| CASNo = 12067-22-0 |
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| ChemSpiderID = 145783 |
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| PubChem = 166593 |
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| EINECS = 235-076-6 |
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| InChI = 1S/3S.2Sm/q3*-2;2*+3 |
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| SMILES = .... |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = Sm<sub>2</sub>S<sub>3</sub> |
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| Formula = Sm<sub>2</sub>S<sub>3</sub> |
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| MolarMass = 396.92 g/mol |
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| MolarMass = 396.915 g/mol |
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| Appearance = red-brown crystals |
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| Appearance = red-brown crystals |
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| Density = 5.87 g/cm³, solid |
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| Density = 5.87 g/cm<sup>3</sup>, solid |
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| Solubility = ? |
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| Solubility = |
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| MeltingPt = 1720°C |
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| MeltingPtC = 1720 |
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| BandGap = 1.71 eV |
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| MagSus = +3300.0·10<sup>−6</sup> cm<sup>3</sup>/mol |
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| CrystalStruct = cubic |
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| CrystalStruct = orthorhombic |
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'''Samarium(III) sulfide''' (]]) is a ] of the rare earth element ], and ]. In this compound samarium is in the +3 ], and sulfur is an anion in the −2 state. |
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==Production== |
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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 ] ] complex, and ].<ref>{{cite journal |last1=Kumbhar |first1=V.S. |last2=Jagadale |first2=A.D. |last3=Lokhande |first3=C.D. |title=Supercapacitive evaluation of soft chemically deposited α-Sm2S3 thin films |journal=Journal of Power Sources |date=July 2013 |volume=234 |pages=107–110 |doi=10.1016/j.jpowsour.2013.01.078}}</ref> |
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==Properties== |
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The low temperature α form crystallises in the ]. The unit cell has dimensions a=7.376, b=3.9622 c=15.352 Å with volume 448.7 Å<sub>3</sub>. There are four of the formula in each unit cell (Sm<sub>8</sub>S<sub>12</sub>). 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 ]. The other is a sevenfold capped distorted octahedral arrangement. This structure is similar to other light rare-earth element sulfides.<ref>{{cite journal |last1=Aruga |first1=Atsushi |last2=Tsujimi |first2=Sachiko |last3=Nakai |first3=Izumi |title=Crystal Structure of Samarium Sesquisulfide, α-Sm2S3. |journal=Analytical Sciences |date=1996 |volume=12 |issue=1 |pages=151–152 |doi=10.2116/analsci.12.151|doi-access=free }}</ref> |
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| 0.0033 cm³/mol |
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| 1.71 eV |
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Samarium(III) sulfide is a ] with a ] of 1.7 eV.<ref>{{cite journal |last1=Marin |first1=Chris M. |last2=Wang |first2=Lu |last3=Brewer |first3=Joseph R. |last4=Mei |first4=Wai-Ning |last5=Cheung |first5=Chin Li |title=Crystalline α-Sm2S3 nanowires: Structure and optical properties of an unusual intrinsically degenerate semiconductor |journal=Journal of Alloys and Compounds |date=June 2013 |volume=563 |pages=293–299 |doi=10.1016/j.jallcom.2013.02.082}}</ref> As a thin film on high area electrodes, it is under investigation as a ] ], with ]s of up to 360 ]s per gram.<ref>{{cite journal |last1=Ghogare |first1=T.T. |last2=Lokhande |first2=V.C. |last3=Ji |first3=T. |last4=Patil |first4=U.M. |last5=Lokhande |first5=C.D. |title=A graphene oxide /samarium sulfide (GO/Sm2S3) composite thin film: Preparation and electrochemical study |journal=Surfaces and Interfaces |date=June 2020 |volume=19 |pages=100507 |doi=10.1016/j.surfin.2020.100507|s2cid=216370577 }}</ref> |
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{{Unreferenced|date =September 2007}} |
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==Related== |
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'''Samarium(III) sulfide''' (]]) is a ]. |
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Related samarium sulfides include the monosulfide SmS and the mixed valent Sm<sub>3</sub>S<sub>4</sub> which are also semiconductors.<ref>{{cite journal |last1=Wang |first1=Lu |last2=Marin |first2=Chris |last3=Mei |first3=Wai-Ning |last4=Cheung |first4=Chin |title=Electronic structures of lanthanum, samarium, and gadolinium sulfides |url=https://digitalcommons.unomaha.edu/physicsfacpub/62/ |journal=AIMS Materials Science |pages=97–105 |date=31 May 2015|volume=2 |issue=2 |doi=10.3934/matersci.2015.2.97 |doi-access=free }}</ref> KSm<sub>2</sub>CuS<sub>6</sub> is a layered quaternary sulfide.<ref>{{Cite journal|last1=Pomelova|first1=Tatiana A.|last2=Podlipskaya|first2=Tatiana Yu.|last3=Kuratieva|first3=Natalia V.|last4=Cherkov|first4=Alexander G.|last5=Nebogatikova|first5=Nadezhda A.|last6=Ryzhikov|first6=Maxim R.|last7=Huguenot|first7=Arthur|last8=Gautier|first8=Régis|last9=Naumov|first9=Nikolay G.|date=2018-11-05|title=Synthesis, Crystal Structure, and Liquid Exfoliation of Layered Lanthanide Sulfides KLn 2 CuS 6 (Ln = La, Ce, Pr, Nd, Sm)|url=https://pubs.acs.org/doi/10.1021/acs.inorgchem.8b02213|journal=Inorganic Chemistry|language=en|volume=57|issue=21|pages=13594–13605|doi=10.1021/acs.inorgchem.8b02213|pmid=30354089|s2cid=53026735 |issn=0020-1669}}</ref> |
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==References== |
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==References== |
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{{Samarium compounds}} |
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{{Samarium compounds}} |
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{{Sulfides}} |
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