Crystal structure of [2,6-bis(dimethylamino)phenyl]lithium: the first trimeric organolithium compound.
The title compd. (I) was prepd. in 70% yield by lithiation of 1,3-(Me2N)2C6H4 with BuLi. The x-ray structure of I reveals the first trimeric organolithium species. This trimer is retained in apolar solvents like benzene or toluene. From NMR data a monomer-trimer equil. is proposed in THF soln.
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