Reactivity of a β-diketiminate ytterbium(II) hydride with cyclopentadiene derivatives

Cyclopentadienyl ligands are ubiquitous in lanthanide chemistry and have been used extensively to stabilize low-valent lanthanide(II) complexes. We now report the reactions of β-diketiminate ytterbium(II) hydride [(BDIDipp)Yb(H)]2 (BDIDipp = HC{C(Me)NDipp}2, Dipp 2,6-iPr2C6H3) with tetramethylcyclopentadiene, pentamethylcyclopentadiene, indene, fluorene; provide ready access heteroleptic η5-C5R5 cyclopentadienides extrusion hydrogen gas. The tetramethylcyclopentadienyl, pentamethylcyclopentadienyl, indenyl, fluorenyl compounds were characterized by 1H 13C{1H} NMR, elemental analysis, single crystal X-ray diffraction. These data indicated that each cyclopentadienide exists as a mononuclear species both solution solid state, formulated retention oxidation state on center. Additionally, pentamethylcyclopentadienyl derivative was neutron diffraction, study explored nature an agostic interaction between methyl group