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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]
Scandium hydride is not well understood, although it appears not to be a saline hydride of Sc(II). [5] As is observed for most elements, a diatomic scandium hydride has been observed spectroscopically at high temperatures in the gas phase. [6] Scandium borides and carbides are non-stoichiometric, as is typical for neighboring elements. [7]
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]
Upload file; Search. Search. Appearance. Donate; ... Download QR code; Print/export ... Scandium compounds are compounds that contain the chemical element scandium ...
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 ...
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Scandium acetylacetonate is the coordination complex with the formula Sc(C 5 H 7 O 2) 3 where [C 5 H 7 O 2] − refers to acetylacetonate. It is a volatile white solid that is soluble in benzene. The complex features Sc(III) with octahedral molecular geometry. [1] It was first prepared by treating scandium nitrate with acetylacetone in the ...
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