ChemInform Abstract: Fluorosilyl and Fluoroboryl Substituted Cyclotetrasilazanes. Synthesis and Crystal Structures.

K. DIPPEL; U. Klingebiel; Thomas Kottke; Frank Pauer; In Memory: G.M. Sheldrick (1942–2025); Dietmar Stalke

doi:10.1002/chin.199040237

ChemInform Abstract: Fluorosilyl and Fluoroboryl Substituted Cyclotetrasilazanes. Synthesis and Crystal Structures.

ChemInform 21(40)

Article 1990 English

Abstract

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The monolithium derivative of octamethylcyclotetrasilazane (I) and the dilithiated analogue (V) react with difluorosilanes such as (II) and the difluoroborylamine (VI) with retention of the cyclotetrasilazane structure to yield the mono‐ and disubstituted derivatives of the type (III) ((IIIa) (R2: Me) and (IIIb): space group P2 1 /n, Z=4), (IV) (yields 84‐92%; (IVa) (R2: Me): P2 1 /n, Z=2; (IVa) (R2: tBu): P1, Z=1), and (VII), respectively.

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