Co-ordination chemistry of scandium. Part III. Complexes of scandium(III) perchlorate with uni- and bi-dentate oxygen donor ligands

Abstract

Complexes of the type [ScL₆](ClO₄)₃{L = dimethyl sulphoxide, NN-dimethylformamide, pyridine N-oxide, 2-, 3-, and 4-picoline N-oxides, ½(2,2′-bipyridyl 1,1′-dioxide), ½[1,2-bis-(diphenylphosphinylethane)], ½[1,2-bis-(diphenylarsinyl)ethane] have been isolated. With triphenylphosphine oxide, ScL₄(ClO₄)₃ is obtained. Complexes have been characterized by i.r. and Raman spectroscopy and conductance measurements. I.r. spectral data indicate distortion of the [ScL₆]³⁺ cations from O_h symmetry, and co-ordination of the perchlorate ion in the triphenylphosphine oxide complex.