Iron(II,III) sulfide: Difference between revisions

| verifiedrevid = 427821486

|ImageFile1=

|Section1 = {{Chembox Identifiers

| PubChem = 72720442

| ChemSpiderID = 34999896

| ChEBI = 86238

| CASNo = 12063-39-7

| StdInChI=1S/3Fe.4S/q+2;2*+3;4*-2

| StdInChIKey = UHUWQCGPGPPDDT-UHFFFAOYSA-N

| SMILES = [S-2].[S-2].[S-2].[S-2].[Fe+2].[Fe+3].[Fe+3]

}}

|Section2 = {{Chembox Properties

'''Iron(II,III) sulfide''' is a blue-black (sometimes pinkish{{cn|date=December 2022}}) chemical compound of [[iron]] and [[sulfur]] with formula Fe₃S₄ or FeS·Fe₂S₃, which is much similar to [[iron(II,III) oxide]]. It occurs naturally as the [[sulfide mineral]] [[greigite]] and is [[magnetic]]. It is a [[biomineralization|bio-mineral]] produced by and found in [[magnetotactic bacteria]]. It is a [[mixed valence compound]], featuring both Fe²⁺ and Fe³⁺ centers, in 1:2 ratio.

==Crystal structure==

The crystallographic unit cell is cubic, with [[space group]] Fd3m. The S anions form a cubic close-packed lattice, and the Fe cations occupy both tetrahedral and octahedral sites.<ref name=Handbook>{{cite book|editor1=Anthony, John W. |editor2=Bideaux, Richard A. |editor3=Bladh, Kenneth W. |editor4=Nichols, Monte C. |title= Handbook of Mineralogy|publisher= Mineralogical Society of America|place= Chantilly, VA, US|chapter-url=http://rruff.geo.arizona.edu/doclib/hom/greigite.pdf |chapter=Greigite |access-date=December 5, 2011|isbn=978-0962209703 |volume=I (Elements, Sulfides, Sulfosalts)|year=1990}}</ref><ref name=Vaughan>Vaughan, D. J.; Craig, J. R. “Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. {{ISBN|0-521-21489-0}}.</ref>

{{Gallery

|title=Crystal structure of iron(II,III) sulfide projected along the [110] direction

|width=250

|align=center

|File:Greigite structure 110 SFe4 tetrahedra.png|Emphasis on the SFe₄ tetrahedra.

|File:Greigite structure 110 FeS4 tetrahedra.png|Emphasis on the FeS₄ tetrahedra

|File:Greigite structure 110 FeS6 octahedra.png|Emphasis on the FeS₆ octahedra

}}

==Magnetic and electronic properties==

Like the related oxide [[magnetite]] (Fe₃O₄), iron(II,III) sulfide is [[ferrimagnetic]], with the spin magnetic moments of the {{chem2|Fe^III}} centers in the tetrahedral sites oriented in the opposite direction as those in the octahedral sites, and a net magnetization. Both metal sites have high [[spin quantum number]]s. The electronic structure of greigite is that of a [[half metal]].<ref name=devey09>{{cite journal|last1=Devey|first1=Anthony|first2=R.|last2=Grau-Crespo|first3=N.H.|last3=De Leeuw|title=Electronic and magnetic structure of Fe₃S₄: GGA+U investigation|journal=Physical Review B|year=2009|volume=79|pages=195126| doi=10.1103/PhysRevB.79.195126|issue=19|bibcode = 2009PhRvB..79s5126D }}</ref><ref>{{cite journal| title=The Curie temperature and magnetic exchange energy in half-metallic greigite Fe₃S₄|doi=10.1088/0031-8949/83/04/045702|year=2011|volume=83|pages=045702| last1=Wang| first1=Jun| last2=Cao| first2=Shi-He| last3=Wu| first3=Wei| last4=Zhao| first4=Guo-Meng| journal=Physica Scripta| issue=4|bibcode = 2011PhyS...83d5702W }}</ref>

*{{cite journal | last1 = Mann | first1 = Stephen | last2 = Sparks | first2 = Nicholas H. C. | author3-link = Richard B. Frankel | last3 = Frankel | first3 = Richard B. | last4 = Bazylinski | first4 = Dennis A. | last5 = Jannasch | first5 = Holger W. | title = Biomineralization of ferrimagnetic greigite (Fe₃S₄) and iron pyrite (FeS₂) in a magnetotactic bacterium | journal = Nature | volume = 343 | pages = 258 | year = 1990 | doi = 10.1038/343258a0 | issue=6255|bibcode = 1990Natur.343..258M | s2cid = 4351424 | url = https://digitalcommons.calpoly.edu/phy_fac/269 }}

*{{cite journal | last1 = Roberts | first1 = A | title = Magnetic properties of sedimentary greigite (Fe₃S₄) | journal = Earth and Planetary Science Letters | volume = 134 | issue = 3–4 | pages = 227–236 | year = 1995 | doi = 10.1016/0012-821X(95)00131-U | bibcode=1995E&PSL.134..227R}}

*{{cite journal | last1 = Heywood | first1 = B. R. | last2 = Bazylinski | first2 = D. A. | last3 = Garratt-Reed | first3 = A. | last4 = Mann | first4 = S. | last5 = Frankel | first5 = R. B. | title = Controlled biosynthesis of greigite (Fe₃S₄) in magnetotactic bacteria | journal = Naturwissenschaften | volume = 77 | issue = 11 | pages = 536–538 | year = 1990 | doi = 10.1007/BF01139266|bibcode = 1990NW.....77..536H | s2cid = 28912546 | url = https://digitalcommons.calpoly.edu/phy_fac/134 }}

*{{cite journal | last1 = Reynolds | first1 = R. L. | last2 = Tuttle | first2 = M. L. | last3 = Rice | first3 = C. A. | last4 = Fishman | first4 = N. S. | last5 = Karachewski | first5 = J. A. | last6 = Sherman | first6 = D. M. | title = Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope basin, Alaska | journal = American Journal of Science | volume = 294 | issue = 4 | pages = 485–528 | year = 1994 | doi = 10.2475/ajs.294.4.485 | doi-access = free }}

*{{cite journal | last1 = Snowball | first1 = Ian | last2 = Thompson | first2 = Roy | title = The occurrence of Greigite in sediments from Loch Lomond | journal = Journal of Quaternary Science | volume = 3 | issue = 2 | pages = 121–125 | year = 1988 | doi = 10.1002/jqs.3390030203|bibcode = 1988JQS.....3..121S }}

*{{cite journal | last1 = Stanjek | first1 = H. | last2 = Fassbinder | first2 = J. W. E. | last3 = Vali | first3 = H. | last4 = Wagele | first4 = H. | last5 = Graf | first5 = W. | title = Evidence of biogenic greigite (ferrimagnetic Fe₃S₄) in soil | journal = European Journal of Soil Science | volume = 45 | issue = 2 | pages = 97–103 | year = 1994 | doi = 10.1111/j.1365-2389.1994.tb00490.x}}

*{{cite journal | last1 = Hoffmann | first1 = V | title = Greigite (Fe₃S₄): magnetic properties and first domain observations | journal = Physics of the Earth and Planetary Interiors | volume = 70 | issue = 3–4 | pages = 288–301 | year = 1992 | doi = 10.1016/0031-9201(92)90195-2|bibcode = 1992PEPI...70..288H }}

*{{cite journal | last1 = Fassbinder | first1 = Jörg W. E. | last2 = Stanjek | first2 = Helge | title = Magnetic properties of biogenic soil greigite (Fe₃S₄) | journal = Geophysical Research Letters | volume = 21 | issue = 22 | pages = 2349–2352 | year = 1994 | doi = 10.1029/94GL02506 | bibcode=1994GeoRL..21.2349F}}

{{Iron compounds}}

{{Sulfides}}

[[Category:Iron(II,III) compounds]]