ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Chemistry of rare earth elements. XVIII. Scandium chloroacetates

J. Pokorný

Lehrstuhl für anorganische Chemie an der Technischen Hochschule für Chemie, Praha

Abstract: By dissolving freshly prepd. Sc(OH)₃ in the corresponding acids, monochloroacetate (I), hydroxidodichloroacetate (II), and trichloroacetate (III) of Sc were prepd. I and III are normal salts, and II is a monobasic salt. They are sol. in H₂O and form small irregular crystals for which Debye-Scherrer patterns were obtained. The thermal decompn. is endothermic with the volatilization of Cl and COCl₂ and the formation of Sc₂O₃. I contained 13.95% Sc, II 13.15, and III 8.21. The decompn. of I and II started at 250°, and was practically completed at 450°. The decompn. of III started at 100°; almost all the decompn. occurred at 250° but was not completed until 350°. At 700° pure Sc₂O₃ was obtained which did not contain Cl. The Sc ion had a slight effect on the ir spectra, but the effects of the original acids remained. The influence of Cl was noted by the decreased absorption of the CH₂ group at 3000 cm^-1 The valence vibration of the CCl bond was at 700-800 cm^-1

Full paper in Portable Document Format: 198a635.pdf (in Czech)

Chemical Papers 19 (8) 635–640 (1965)