Jeremy M. Perotti

Structural studies of lanthanide and yttrium metallocene oxides

Abstract Examination of the chemistry of sterically crowded (C5Me4R)3Ln complexes has provided access to a series of [(C5Me4R)2Ln]2(μ-O) complexes: [(C5Me5)2La]2(μ-O), [(C5Me5)2Nd(NC5H4NC4H8)]2(μ-O), [(C5Me4iPr)2Sm]2(μ-O), [(C5Me4Et)2Gd]2(μ-O), and [(C5Me5)2Sm(NC5H5)]2(μ-O). X-ray crystallographic data on these complexes provide information on the effect of metal and cyclopentadienyl ring size on LnO bond distances and LnOLn angles, which vary between 173 and 180° in these complexes.

The Tetramethylpiperidinyl-1-Oxide Anion (TMPO-) as a Ligand in Lanthanide Chemistry: Synthesis of the Per(TMPO-) Complex [(ONC5H6Me4)2Sm(μ-ONC5H6Me4)]2

(C5Me5)3Sm reacts with the free radical 2,2,6,6-tetramethylpiperidinyl-1-oxy (TMPO) to form (C5Me5)2 and the per nitroxide [(eta 1-ONC5H6Me4)2Sm(mu-eta 1:eta 2-ONC5H6Me4)]2.