Synthesis and thermal reactivity of organoscandium and yttrium complexes of sterically less bulky salicylaldiminato ligands

Scandium and yttrium bis(ligand) mono(alkyl) complexes, of N-phenyl (L1) N-2-isopropylphenyl (L2) and N-mesityl (L3) substituted ortho-tert-butylsalicylaldiminato ligands were prepared by alkane elimination from [M(CH2SiMe2R)3(THF)2] (R = Me, Ph) and two equivalents of proteo ligand (HL). The resulting [L2M(THF)n(CH2SiMe2R)] (n = 0–2, L = L1 (1), L2 (2), L3 (3)) complexes are thermally unstable, decomposing rapidly between −20 and 20 °C. In …