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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]
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 ...
He discovered the element scandium in 1879, by separating out scandium(III) oxide, also known as scandia. [1]: 550 [2] In addition to his work concerning the analytic chemistry of elements and rare earths, he made substantial contributions to Swedish agriculture, including methods of fertilization and the introduction of sugar beets as a crop.
It is the scandium-dominant member. [1] [2] It stands for scandium-analogue of other pyroxene-group members, esseneite, grossmanite and kushiroite. [2] Davisite is one of scarce minerals containing essential scandium. [3] It is named for Andrew M. Davis, an American meteoriticist and professor of astronomy and geoscience at the University of ...
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 ...
Aluminium–scandium alloys (AlSc) are aluminum alloys that consist largely of aluminium (Al) and traces of scandium (Sc) as the main alloying elements.In principle, aluminium alloys strengthened with additions of scandium are very similar to traditional nickel-base superalloys in that both are strengthened by coherent, coarsening resistant precipitates with an ordered L1 2 structure.
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Scandium(III) hydroxide is an inorganic compound with the chemical formula Sc(OH) 3, the trivalent hydroxide of scandium. It is an amphoteric compound. [ 2 ] It is slightly soluble in water, and its saturated solution (pH = 7.85) contains Sc(OH) 3 and a small amount of Sc(OH) + 2 .