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Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, [9] together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia. [10]
Download as PDF; Printable version; In other projects Wikidata item; ... Pages in category "Scandium minerals" The following 7 pages are in this category, out of 7 ...
The reaction of scandium trichloride with two equivalents of sodium cyclopentadienide (NaCp) produces the chloride-bridged dimer: 2 ScCl 3 + 4 NaCp → [Cp 2 Sc(μ-Cl)] 2 + 4 NaCl. Cp 3 Sc is a polymer wherein one third of the Cp ligands serving as bridging ligands. [5] Bulkier cyclopentadienide ligands give monoscandium derivatives, e.g. (C 5 ...
In all four halides, the scandium is 6-coordinated. They can be prepared by reacting scandium oxide or scandium hydroxide with the corresponding acid: [3] Sc(OH) 3 + 3 HX → ScX 3 + 3 H 2 O. The halides are Lewis acids; for example, ScF 3 dissolves in a solution containing excess fluoride ion to form [ScF 6] 3−. The coordination number 6 is ...
Download as PDF; Printable version; In other projects Wikimedia Commons; ... Pages in category "Scandium" The following 5 pages are in this category, out of 5 total.
Thortveitite is a rare mineral consisting of scandium yttrium silicate (Sc,Y) 2 Si 2 O 7. It is the primary source of scandium. [2] Occurrence is in granitic pegmatites. It was named after Olaus Thortveit, a Norwegian engineer. It is grayish-green, black or gray in color. [3] [4] [5] [6]
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Download QR code; Print/export ... Download as PDF; Printable version; In other projects ... Scandium compounds are compounds that contain the chemical element ...