NMR experiments on sodium biphenyl (NaBp), potassium biphenyl (KBp) and ribidium biphenyl (RbBp), dissolved in various solvents are summarized with emphasis on the structural information which can be obtained from such experiments. The crystal structures of NaBp.2Tg (Tg = triglyme), KBp.2Ttg and RbBp.2Ttg (Ttg tetraglyme) are discussed, in relation to the NMR results obtained for these systems ...