Aminotroponimines as ligands for yttrium and lanthanide complexes

Article abstract of DOI:10.1002/cber.19971300708

The reaction of N-isopropyl-2-(isopropylamino)troponimine, [(i-Pr)₂ATI]H, with KH in THF affords [(i-Pr)₂ATI]K. This is a useful starting material for the preparation of the mono-, bisand tris-substltuted compounds {[(i-Pr)₂ATI]YCl₂(THF)₂)₂, [(J-Pr)₂ATI]₂Y[0(2,6-r-Bu₂C₆H ₃)] and [(J-Pr)₂-ATI]₃Ln (Ln = Y, La, Sm), which can be obtained from [(i-Pr)₂ATI]K and LnX₃ (X = Cl, I), or Y[O(2,6-(-BuC₆H₃)]₃. All compounds have been characterized by spectroscopic methods. The monosubstituted yttrium complex [[(iPr)₂ATI]YCl₂(THF)₂)₂ has also been investigated by single crystal X-ray diffraction. VCH Verlagsgescllschaft mbH,.