Abstract
Electron–diffraction and mass–spectrometric studies of saturated vapor of scandium tris–dipivaloyl–methanate showed that at 135(5)°, the vapor contains only monomeric Sc(thd)3, whose structural parameters r a , r g , and rα were determined. The internuclear distances in the chelate ring were found to be rαSc=O) = 2.066(5)A, rα(O=C) = 1.272(3)A, and rα(C=Cr) = 1.385(3)A. The ScO6 coordination polyhedron has a D3 symmetry configuration close to a regular antiprism. The angle of rotation of the O=O=O trigonal faces relative to their position in a regular prism is 25.7(1.5)°.
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