Gadolinium monosulfide
{{Chembox
| Name = Gadolinium monosulfide
| ImageFile = NaCl bonds.svg
| ImageCaption =
| IUPACName =
| OtherNames = Gadolinium (II) sulfide
| Section1 = {{Chembox Identifiers
| CASNo = 12134-74-6
| PubChem = 160355979
| ChemSpiderID = 73981756
| EINECS =
| StdInChI=1S/Gd.S
| StdInChIKey = CHHGTOFGJMUJFT-UHFFFAOYSA-N
| SMILES = [Gd].[S]
}}
| Section2 = {{Chembox Properties
|Gd=1| S=1
| Appearance = Crystals
| Density = 7.2 g/cm3
| Solubility =
| MeltingPtC = 2300
| BoilingPtC =
}}
| Section4 = {{Chembox Structure
| CrystalStruct = Cubic
}}
| Section7 = {{Chembox Hazards
| MainHazards =
| GHSPictograms =
| GHSSignalWord =
| HPhrases =
| PPhrases =
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| Section6 = {{Chembox Related
| OtherCompounds = Samarium monosulfide
}}
}}
Gadolinium monosulfide is a binary inorganic compound of gadolinium and sulfur with the chemical formula GdS.{{cite web |title=Gadolinium monosulfide |url=https://webbook.nist.gov/cgi/formula?ID=C12134746 |publisher=NIST |access-date=30 July 2024 |language=en}}{{cite web |title=Gadolinium Sulfide |url=https://www.americanelements.com/gadolinium-sulfide-12134-74-6 |publisher=American Elements |access-date=30 July 2024 |language=en}}
Synthesis
Heating stoichiometric amounts of pure substances in an inert atmosphere:
::{{chem2|Gd + S -> GdS}}
Also a reaction of gadolinium(III) oxide and gadolinium sesquisulphide can make it:{{cite journal |last1=Peshev |first1=P. |last2=Bliznakov |first2=G. |last3=Toshev |first3=A. |title=On the preparation and some physical properties of gadolinium sesquisulphide and gadolinium monosulphide |journal=Journal of the Less Common Metals |date=April 1968 |volume=14 |issue=4 |pages=379–386 |doi=10.1016/0022-5088(68)90161-6 |url=https://www.sciencedirect.com/science/article/abs/pii/0022508868901616 |access-date=30 July 2024|url-access=subscription }}
::{{chem2|Gd2O3 + 2Gd2S3 + 3C -> 6GdS + 3CO}}
Physical properties
Gadolinium monosulfide forms crystals of cubic system, space group Fm4m, unit cell parameter a = 0.5574 nm, Z = 4, isomorphous with NaCl.{{cite journal |last1=Predel |first1=B. |title=Gd-S (Gadolinium-Sulfur) |journal=Ga-Gd – Hf-Zr |series=Landolt-Börnstein - Group IV Physical Chemistry |date=1996 |volume=f |pages=1–2 |doi=10.1007/10501684_1447 |isbn=3-540-60344-1 |url=https://materials.springer.com/lb/docs/sm_lbs_978-3-540-44996-6_1447|url-access=subscription }}{{cite book |last1=Donnay |first1=Joseph Désiré Hubert |title=Crystal Data: Inorganic compounds 1967-1969 |date=1978 |publisher=National Bureau of Standards |page=C-70 |url=https://books.google.com/books?id=QZkhAQAAMAAJ&dq=Gadolinium+monosulfide+GdS&pg=RA6-PA70 |access-date=30 July 2024 |language=en}}
GdS melts congruently at 2300 °C.
References
{{Reflist}}
{{Gadolinium compounds}}
{{sulfides}}