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Related Products of 33100-27-5, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 33100-27-5, C10H20O5. A document type is Article, introducing its new discovery.
Halide abstraction reactions of MCl3 (M = Sc, Y or La) with SbCl5 in the presence of a crown ether provided a series of anhydrous cationic M(III)-crown compounds of the types (12-crown-4 = 1,4,7,10-tetraoxacyclododecane), 3 (M = Y or La) and 3 (M = Y or La).Analytical and spectroscopic (1H and 13C NMR) characterisation of these compounds supports their formulation as hexachloroantimonate(V) salts.The structure of has been determined by X-ray diffraction.Crystals are orthorhombic, space group Pbca with a = 17.015(10), b = 13.296(6), c = 22.236(12) Angstroem and Z = 8.The cation has a threaded structure with an essentially linear ScCl2(+) unit .All the oxygen atoms of the oxacrown ligand are coplanar and are bonded to the central scandium atom, Sc-O 2.166(4) – 2.223(4) Angstroem, (mean) 2.188 Angstroem with the benzene ring tilted out of this plane at an angle of 24.9 deg.The resulting geometry of the seven-co-ordinate scandium atom is pentagonal bipyramidal.
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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare