ON THE REACTION OF DILITHIUMBIPHENYL WITH SMBR3 - THE CRYSTAL-STRUCTURE OF [(C24H16)SMBR(THF)2]2-CENTER-DOT[C24H14]

In THF SmBr3 forms with [(biph)Li2] the dimeric complex [(quaph)SmBr(t hf)2]2 . [C24H14]. The structure was characterized by X-ray single cry stal structure analysis (space group P1BAR (No. 2), Z = 1, a = 943.3(6 ) pm, b = 1350.3(l) pm, c = 1 599.9(9) pm, alpha = 64.99(5)degrees, be ta = 89.02(5)degrees, gamma = 73.02(6)degrees)). The Sm iones are brid ged by two Br iones. Coordination by one quaph and THF ligands leads t o distorded octahedra coordination of the Sm iones. Additionally cryst allizes one molecule dibenzonaphthacene.