On the use of solid-state 45Sc NMR for structural investigations of molecular and silica-supported scandium amide catalysts

Abstract

Tris- and tetra-coordinated scandium amides were grafted onto silica and probed as catalysts for alkyne dimerization. ⁴⁵Sc NMR was carried out, providing information about the metal coordination sphere. The increasing number of coordinated ligands was correlated with decreased catalytic activity.