Synthesis of diphenylmethylene bridged fluorenyl cyclopentadienyl lanthanocene complexes with Cs symmetry and crystal structures of the ate complexes [Li(thf[hair space])4][LnCl2{(C13H8)CPh2(C5H4)}] and [Li(thf[hair space])4][Ln(BH4)2{(C13H8)CPh2(C5H4)}] (Ln = Nd or La)

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Changtao Qian, Wanli Nie and Jie Sun


Abstract

The reaction of anhydrous lanthanide chlorides LnCl3 with the dilithium salt of (C13H9)CPh2(C5H5) in thf at ambient temperature led to the formation of the ‘ate’ complexes [Li(thf[hair space])4][LnCl2{(C13H8)CPh2(C5H4)}] (Ln = Lu 1 or Y 2). Treatment of [Ln(BH4)3(thf[hair space])3] with 3 equivalents of (C13H8)CPh2(C5H4)Li2 in thf solution gave the anionic complexes [Li(thf[hair space])4][Ln(BH4)2{(C13H8)CPh2(C5H4)}] (Ln = La 3 or Nd 4). The crystal structures of complexes 1, 3, 4 were determined and indicated that they existed as discrete cation and anion pairs, which showed two crystallographically independent molecules in the unit cell.


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