Reaction of a new β-diketiminato derivative of scandium, LScBr 2 (L = Et 2 NCH 2 CH 2 NC(Me)CHC(Me)NCH 2 CH 2 NEt 2 ), with (C 3 H 5 )MgBr gave the unexpected scandium complex (LMgBr) 2 ScBr ( 1 ), whose structure was established by X-ray analysis, liquid and solid-state NMR, EPR, UV−vis, and magnetic measurements. Correlation of all results leads to the conclusion that the formal oxidation state of scandium in this complex is one (Sc(I)) having no unpaired electrons.
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Neculai et al. (2002) studied this question.
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