-chloride-xtal-one-layer-3D-bs-17.png) Part of a layer in thecrystal structure of YCl3[1] | |||
| |||
| Names | |||
|---|---|---|---|
| IUPAC names Yttrium(III) chloride Yttrium trichloride | |||
| Identifiers | |||
3D model (JSmol) |
| ||
| ChemSpider | |||
| ECHA InfoCard | 100.030.716 | ||
| EC Number |
| ||
| RTECS number |
| ||
| UNII | |||
| |||
| |||
| Properties | |||
| YCl3 | |||
| Molar mass | 195.265 g/mol[2] | ||
| Appearance | white solid | ||
| Density | 2.61 g/cm3[2] | ||
| Melting point | 721 °C (1,330 °F; 994 K)[2] | ||
| Boiling point | 1,482 °C (2,700 °F; 1,755 K)[2] | ||
| 751 g/L (20 °C)[2] | |||
| Solubility | 601 g/Lethanol (15 °C) 606 g/Lpyridine (15 °C)[3] | ||
| Structure[4] | |||
| Monoclinic,mS16 | |||
| C2/m, No. 12 | |||
a = 0.692 nm,b = 1.194 nm,c = 0.644 nm α = 90°, β = 111°, γ = 90° | |||
Formula units (Z) | 4 | ||
| Hazards | |||
| GHS labelling: | |||
 | |||
| Warning | |||
| H315,H319,H335 | |||
| P261,P264,P271,P280,P302+P352,P304+P340,P305+P351+P338,P312,P332+P313,P337+P313,P362 | |||
| NFPA 704 (fire diamond) | |||
| Safety data sheet (SDS) | External MSDS | ||
| Related compounds | |||
Otheranions | Yttrium(III) fluoride Yttrium(III) bromide Yttrium(III) iodide | ||
Othercations | Scandium(III) chloride Lutetium(III) chloride | ||
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
Yttrium(III) chloride is aninorganic compound ofyttrium andchloride. It exists in two forms, the hydrate (YCl3(H2O)6) and an anhydrous form (YCl3). Both are colourless salts that are highlysoluble in water anddeliquescent.
Solid YCl3 adopts a cubic[citation needed] structure with close-packed chloride ions and yttrium ions filling one third of the octahedral holes and the resulting YCl6 octahedra sharing three edges with adjacent octahedra, giving it a layered structure.[5][1] This structure is shared by a range of compounds, notablyAlCl3.
YCl3 is often prepared by the "ammonium chloride route," starting from either Y2O3 or hydrated chloride or oxychloride.[6][7] or YCl3·6H2O.[8] These methods produce (NH4)2[YCl5]:
The pentachloridedecomposes thermally according to the following equation:
The thermolysis reaction proceeds via the intermediacy of (NH4)[Y2Cl7].
TreatingY2O3 with aqueousHCl produces the hydrated chloride (YCl3·6H2O). When heated, this salt yields yttriumoxychloride rather than reverting to the anhydrous form.
Yttrium chloride is used to make nanocrystals doped with erbium (Er3+) and ytterbium (Yb3+), such as NaYF4:Yb3+/Er3+.[9]
In electronics and optics, YCl3 is added to semiconductors, LED materials, and lasers to enhance their performance and stability.[10]
-chloride-xtal-unit-cell-3D-bs-17.png)
-chloride-xtal-layers-3D-bs-17.png)
