Alkane elimination between Y(CH₂SiMe₃)₃(THF)₂ and the diprotio ligands [(3,6-^tBu₂C₁₃H₇)SiR₂NH^tBu] (R = Me, 1a; R = Ph, 1b) gave [η³:η¹-((3,6-^tBu₂C₁₃H₆)SiR₂N^tBu)Y(CH₂SiMe₃)(THF)₂] (R = Me, 2a; R = Ph, 2b). 2a is thermally stable in toluene solution and shows a dynamic behavior connected to THF dissociation, while 2b is thermally unstable. Reaction of 2a with H₂ or PhSiH₃ led to the putative hydrido complex “[(3,6-^tBu₂Flu)SiMe₂N^tBu)YH(THF)]_n” (3). Deprotonation of 1a with 1 and 2 equiv of ⁿBuLi gave [(3,6-^tBu₂C₁₃H₆)SiMe₂NH^tBu]Li (5) and [(3,6-^tBu₂C₁₃H₆)SiMe₂N^tBu]Li₂ (4), respectively, both of which were characterized crystallographically. Salt elimination reactions between LnCl₃(THF)_n precursors (Ln = Y, La, Nd) and 1 equiv of 4 gave mixtures of complexes, from which ionic complexes that contain two chelated ligands per lanthanide center, [{η³:η¹-(3,6-^tBu₂C₁₃H₆)SiMe₂N^tBu}₂Ln]^-[Li(solvent)_n]⁺ (Ln = Y, solvent = THF, n = 4, 6; Ln = La, solvent = THF, n = 4, 7; Ln = La, solvent = Et₂O, n = 2, 8; Ln = Nd, solvent = THF, n = 4, 9), were isolated. The neutral dimeric chloro complex [η⁵:η¹-((3,6-^tBu₂C₁₃H₆)SiMe₂N^tBu)Nd(μ-Cl)(THF)]₂ (10) was also crystallized from the crude metathesis product. The solid-state structures of 2a, 8, 9, and 10 show versatile coordination modes of the fluorenyl ligands, either η³ or η⁵ symmetric, involving carbon atoms of the central Cp ring (8 and 10), or unusual η³ dissymmetric, involving carbon atoms of the central Cp and one adjacent phenyl rings (2a and 9). Some of the complexes obtained were explored as catalysts for ethylene and MMA polymerization.