Alkyl-, aryl- and silyl-substituted lithium organics

The field of R3C lithium organic structures is wide and we wiU concentrate on those with alkyl-, aryl- and silyl-substituted anions. Heteroatom-snbstitnted lithinm organics will just be mentioned briefly. 

TABLE 21. RsC-metalated species (R = alkyl, aryl, sUyl) 

However, the indication of charge accumulation is only marginal, because both Cq, carbon atoms show virtually planar environments. By inspection of the metal coordination it becomes obvious where the charge is located. One (TMEDA)Li unit is /7 -coordinated to the neighboring phenyl group (185 pm) and the second /) -bonded (194 pm. Table 21) 

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