Bis{μ-[1-(N-Methylsulfonimidoyl)-2,2-diphenylethene]}-1κ²C¹,N:2κO;1κO:2κ²C¹,N-bis[(tetrahydrofuran-O)lithium] Tetrahydrofuran Solvate and 1-(N-Methylphenylsulfonimidoyl)-2,2-diphenylethene

The crystal structure of the THF (C₄H₈O) solvate of [Li₂(C₂₁H₁₉NOS)₂(C₄H₈O)₂], (1), prepared by the addition of n-BuLi to 1-(N-methylphenylsulfonimidoyl)-2,2-diphenylethene, C₂₁H₁₉NOS, (2), at low temperature in THF, shows a centrosymmetric dimeric aggregate featuring an eight-membered ring with the atomic sequence (Li–C–S–O)₂. The O atom of one tetrahydrofuran molecule, the sulfoximine-O and N atoms and the C_α atom are coordinated to the lithium cation in a distorted tetrahedral arrangement. A comparison with the molecular structure of the precursor (2) is drawn.

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