Journal of the American Chemical Society, Vol.118, No.10, 2503-2504, 1996
First Isolation of a Metal Ketyl in Aggregated Forms - X-Ray Structures of Dimeric and Tetrameric Sodium Fluorenone Ketyl Complexes - (Na(Mu(2)-Eta(1)-Ketyl)(Hmpa)(2))(2) and (Na(Mu(3)-Eta(1)-Ketyl)(Hmpa))(4)