Fluorid gadolinitý

Fluorid gadolinitý
Obecné
Systematický názevFluorid gadolinitý
Anglický názevGadolinium(III) fluoride
Německý názevGadolinium(III)-fluorid
Sumární vzorecGdF3
Vzhledbílá pevná látka
Identifikace
Registrační číslo CAS13765-26-9
EC-no (EINECS/ELINCS/NLP)237-369-4
PubChem10176739
SMILESF[Gd](F)F
InChIInChI=1S/3FH.Gd/h3*1H;/q;;;+3/p-3
Key: TYIZUJNEZNBXRS-UHFFFAOYSA-K
Vlastnosti
Molární hmotnost214,25 g/mol
Teplota tání1231 °C
Hustota7,0 g/cm3
Rozpustnost ve voděnerozpustné
Bezpečnost
GHS05 – korozivní a žíravé látky
GHS05
[1]
H-větyH314, EUH031[1]
P-větyP233, P280, P301+330+331, P305+351+338, P310[1]
Není-li uvedeno jinak, jsou použity
jednotky SI a STP (25 °C, 100 kPa).
Některá data mohou pocházet z datové položky.

Fluorid gadolinitý je anorganická sloučenina s chemickým vzorcem GdF3.

Příprava

Fluorid gadolinitý lze připravit zahřátím oxidu gadolinitého a hydrogenfluoridu amonného. Reakce probíhá ve dvou krocích:[2][3]

Gd2O3 + 6 NH4HF2 → 2 NH4GdF4 + 4 NH4F + 3 H2O
NH4GdF4 → GdF3 + NH3 + HF

Reakcí chloridu gadolinitého s kyselinou fluorovodíkovou a přidáním horké vody vzniká hydrát o složení GdF3·xH2O (x＝0,53). Bezvodý fluorid gadolinitý lze připravit zahříváním hydrátu s hydrogenfluoridem amonným. Bez použití hydrogenfluoridu amonného vzniká GdOF.[4]

GdCl3 + 3 HF + x H2O → GdF3·xH2O + 3 HCl

Vlastnosti

Fluorid gadolinitý je bílá pevná látka, která je nerozpustná ve vodě. Krystalizuje v ortorombické krystalové soustavě s prostorovou grupou Pnma (Číslo 62).[5]

Využití

Fluorid gadolinitý se využívá k výrobě fluoridových skel.[6]

Reference

V tomto článku byly použity překlady textů z článků Gadolinium(III) fluoride na anglické Wikipedii a Gadolinium(III)-fluorid na německé Wikipedii.

  1. ↑ a b c Gadolinium(III) fluoride, anhydrous, 99.9% (REO), Thermo Scientific Chemicals. www.thermofisher.com [online]. [cit. 2024-01-04]. Dostupné online. (anglicky) 
  2. ↑ 郝占忠. 氟化氢铵氟化法合成氟化钆过程的基础研究 [online]. 材料科学与工艺, 2010 [cit. 2023-01-04]. Dostupné online. (čínsky) 
  3. ↑ 郝占忠, 王斌. Gd2O3－NH4HF2系制备氟化钆机制及工艺研究. 稀有金属 [online]. 2007 [cit. 2024-01-04]. Dostupné online. (čínsky) 
  4. ↑ 郝占忠. 湿法氟化制备水合氟化钆的脱水机制及其氧的行为 [online]. 有色金属(冶炼部分), 2010 [cit. 2024-01-04]. Dostupné online. (čínsky) 
  5. ↑ ANS, Jean d'; LAX, Ellen. Taschenbuch für Chemiker und Physiker. [s.l.]: Springer 1504 s. Dostupné online. ISBN 978-3-540-60035-0. S. 468. (německy) 
  6. ↑ Gadolinium(III) fluoride [online]. Sigma-aldrich [cit. 2023-01-04]. 432164. Dostupné online. 
Fluoridy s prvkem v oxidačním čísle III.
Fluorid aktinitý (AcF3) • Fluorid stříbřitý (AgF3) • Fluorid hlinitý (AlF3) • Fluorid americitý (AmF3) • Fluorid arsenitý (AsF3) • Fluorid zlatitý (AuF3) • Fluorid boritý (BF3) • Fluorid bismutitý (BiF3) • Fluorid berkelitý (BkF3) • Fluorid bromitý (Br2F6) • Fluorid ceritý (CeF3) • Fluorid kalifornitý (CfF3) • Fluorid chloritý (Cl2F6) • Fluorid curitý (CmF3) • Fluorid kobaltitý (CoF3) • Fluorid chromitý (CrF3) • Fluorid dysprositý (DyF3) • Fluorid erbitý (ErF3) • Fluorid einsteinitý (EsF3) • Fluorid europitý (EuF3) • Fluorid železitý (FeF3) • Fluorid gallitý (GaF3) • Fluorid holmitý (HoF3) • Fluorid joditý (IF3) • Fluorid inditý (InF3) • Fluorid iriditý (IrF3) • Fluorid lanthanitý (LaF3) • Fluorid lutecitý (LuF3) • Fluorid manganitý (MnF3) • Fluorid dusitý (NF3) • Fluorid niobitý (NbF3) • Fluorid neodymitý (NdF3) • Fluorid niklitý (NiF3) • Fluorid neptunitý (NpF3) • Fluorid fosforitý (PF3) • Fluorid promethitý (PmF3) • Fluorid praseodymitý (PrF3) • Fluorid plutonitý (PuF3) • Fluorid rhoditý (RhF3) • Fluorid ruthenitý (RuF3) • Fluorid siřitý (SF3) • Fluorid antimonitý (SbF3) • Fluorid skanditý (ScF3) • Fluorid samaritý (SmF3) • Fluorid terbitý (TbF3) • Fluorid thoritý (ThF3) • Fluorid titanitý (TiF3) • Fluorid thallitý (TlF3) • Fluorid thulitý (TmF3) • Fluorid uranitý (UF3) • Fluorid vanaditý (VF3) • Fluorid yttritý (YF3) • Fluorid ytterbitý (YbF3) • Fluorid zirkonitý (ZrF3)

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