Lithiated hydrocarbons are one of the most important classes of compounds in organoelement chemistry. Many of these compounds have been structurally investigated in solution and the crystalline state, as well; [1±3] di-and oligometallated species earned special interest. [4, Dilithiomethane is mentioned as one example here, it is available from the thermolysis of lithium methanide [6, 7] and used in many synthetic procedures. A series of oligomeric structures of lithium methanide was investigated with quantum-chemical methods, in which carbon atoms take the coordination number six. [8] In monomeric dilithiomethane the planar coordination of the carbon atom is only less stable than the tetrahedral coordination of the carbon atom by 71 kJ mol À1 . [9, 10] However, the final structure in solution and of the solid state has not been determined. [11, 12] Several substituted derivatives, such as Me 3 CCHLi 2 , Me 3 SiCHLi 2 , [13] and the title compound 9,9-Dilithiofluorene, [14] have been synthesized, but their structures are not known. It was possible to solve the crystal structures of heteroatom substituted derivatives, such as PhS(O)(NMe)CLi 2 Ph, [15] (Me 3 -SiNPPh 2 ) 2 CLi 2 , [16, 17] (MeO) 2 P(O)CLi 2 SiMe 3 (as aggregate with dimethylamide), [18] and PhSO 2 CLi 2 (SiMe 3 ), [19] where LiÀO and LiÀN bonds dominate the structures. The anion (CHPMe 2 NSiMe 3 ) 2À together with BuMe 2 SiO À forms the backbone of a Li 14 cluster. [20] [{(Me 3 Si) 2 CH} 6 Al 2 CH 2 Li 2 ] was considered as a R 3 Al-adduct to CH 2 Li 2 . [21] Herein, we describe the crystal structure of the 9,9-dilithiofluorene complex 2 [Eq. ( )].