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{{chembox| Watchedfields = changed| verifiedrevid = 470635247| Name = Yttrium(III) chloride| ImageFile1 = Yttrium(III)-chloride-xtal-one-layer-3D-bs-17.png| ImageCaption1 = Part of a layer in the crystal structure of YCl3| ImageName1 = Yttrium(III) chloride| ImageFileL2 = Yttrium(III)-chloride-xtal-unit-cell-3D-bs-17.png| ImageCaptionL2 = Unit cell| ImageFileR2 = Yttrium(III)-chloride-xtal-layers-3D-bs-17.png| ImageCaptionR2 = Layer packing| IUPACName = Yttrium(III) chlorideYttrium trichloride| Section1 = {{Chembox Identifiers| index1_label = hexahydrate:| CASNo = 10361-92-9

correct|CAS}}

correct|chemspider}}| ChemSpiderID = 59696| ChemSpiderID1 = 175148| EC_number1 = 233-801-0| PubChem = 10198055| PubChem1 = 16211498

correct|FDA}}| UNII = 11521XLD38| RTECS = ZG3150000| InChI = 1/3ClH.Y/h3*1H;/q;;;+3/p-3| InChIKey = PCMOZDDGXKIOLL-DFZHHIFOAW| SMILES = Cl[Y](Cl)Cl

correct|chemspider}}| StdInChI = 1S/3ClH.Y/h3*1H;/q;;;+3/p-3

correct|chemspider}}| StdInChIKey = PCMOZDDGXKIOLL-UHFFFAOYSA-K| InChI1=1S/3ClH.6H2O.Y/h3*1H;6*1H2;/q;;;;;;;;;+3/p-3| InChIKey1 = IINACGXCEZNYTF-UHFFFAOYSA-K| SMILES1 = O.O.O.O.O.O.Cl[Y](Cl)Cl }}| Section2 = {{Chembox Properties| Formula = YCl3| MolarMass = 195.265 g/mol| Appearance = white solid

TITLE = CRC HANDBOOK OF CHEMISTRY AND PHYSICS

PUBLISHER = CRC PRESS

PAGE=4.99, CRC Handbook of Chemistry and Physics, | Solubility = 751 g/L (20 °C)| SolubleOther = 601 g/L ethanol (15 °C)606 g/L pyridine (15 °C){{Citation| last = Spencer

year = 1919

location = New York

pages = 135| url =books.google.com/books?id=W2zxN_FLQm8C&pg=PA135 }}| MeltingPtC = 721| MeltingPt_ref = | BoilingPtC = 1482| BoilingPt_ref = }}| Section3 = {{Chembox Structure

JOURNAL=THE JOURNAL OF PHYSICAL CHEMISTRY

ISSUE=11

YEAR=1954

FIRST1=D. H.

FIRST2=GILES F.,

Monoclinic, Pearson symbol>mS16| SpaceGroup = C2/m, No. 12| LattConst_a = 0.692 nm| LattConst_b = 1.194 nm| LattConst_c = 0.644 nm| LattConst_alpha = 90| LattConst_beta = 111| LattConst_gamma = 90| LattConst_ref =| LattConst_Comment = | UnitCellVolume = | UnitCellFormulas = 4 }}| Section4 = {{Chembox Hazards| ExternalSDS = External MSDS| GHSPictograms = {{GHS07}}| GHSSignalWord = Warning

315

335}}

261|264|271|280|302 + 352|304 + 340|305 + 351 + 338|312|332 + 313|337 + 313|362}}| NFPA-H = 1| NFPA-F = 0| NFPA-R = 0}}| Section7 = | Section8 = {hide}Chembox Related| OtherAnions = Yttrium(III) fluorideYttrium(III) bromideYttrium(III) iodide| OtherCations = Scandium(III) chlorideLutetium(III) chloride {edih} }}Yttrium(III) chloride is an inorganic compound of yttrium and chloride. It exists in two forms, the hydrate (YCl3(H2O)6) and an anhydrous form (YCl3). Both are colourless salts that are highly soluble in water and deliquescent. Structure Solid YCl3 adopts a cubic{{Citation needed|date=July 2023|reason=how can a cubic structure be layered??}} 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.Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications {{ISBN|0-19-855370-6}} This structure is shared by a range of compounds, notably AlCl3. Preparation and reactions YCl3 is often prepared by the “ammonium chloride route,” starting from either Y2O3 or hydrated chloride or oxychloride.BOOK, Meyer, G., The Ammonium Chloride Route to Anhydrous Rare Earth Chlorides-The Example of YCl3, The Ammonium Chloride Route to Anhydrous Rare Earth Chlorides—The Example of Ycl 3, Inorganic Syntheses, 25, 1989, 146–150, 10.1002/9780470132562.ch35, 978-0-470-13256-2, BOOK, Synthetic Methods of Organometallic and Inorganic Chemistry, VI, Edelmann, F. T., Poremba, P., Herrmann, W. A., 1997, Georg Thieme Verlag, Stuttgart, 978-3-13-103021-4, or YCl3·6H2O.JOURNAL, Taylor, M.D., Carter, C.P., Preparation of anhydrous lanthanide halides, especially iodides, Journal of Inorganic and Nuclear Chemistry, 24, 4, 387–391, 10.1016/0022-1902(62)80034-7, 1962, These methods produce (NH4)2[YCl5]: 10 NH4Cl + Y2O3 → 2 (NH4)2[YCl5] + 6 NH3 + 3 H2O YCl3·6H2O + 2 NH4Cl → (NH4)2[YCl5] + 6 H2O The pentachloride decomposes thermally according to the following equation: (NH4)2[YCl5] → 2 NH4Cl + YCl3 The thermolysis reaction proceeds via the intermediacy of (NH4)[Y2Cl7].Treating Y2O3 with aqueous HCl produces the hydrated chloride (YCl3·6H2O). When heated, this salt yields yttrium oxychloride rather than reverting to the anhydrous form. References {{reflist}}{{Yttrium compounds}}{{Chlorides}}