Abstract
Abstract When 1,3-di-tert-butyl-2,2-dimethyl-4,4-dichloro-1,3,2,λ2-diazasilastannetidine (1) is allowed to react with the chloride abstracting reagent AgCF3SO3 the chlorides are displaced by triflates forming 2. At the same time a rearrangement in the molecule takes place, one of the methyl groups on silicon migrating to tin in exchange of a triflate. In the solid the new compound 2 is a coordination polymer with trigonal bi-pyramidal tin centers, which exhibit quite unusual short Sn—N bonds in the axial plane (2.005 A) [X-ray structure determination, space group P2/l/n, a = 10.199(6)A, b = 13.532(9)A, c = 17.641(9)A, β = 99.13(9)°, Z = 4].
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