Strukturuntersuchungen an Vierringsystemen, III* Kristall- und Molekülstrukturen von trans-2.4-Bis(trimethylsilyl)-2.4-dihydro- 1.3-dithietan-1.1.3.3-tetroxid, 2.2.4.4-Tetramethyl-3-pyrrolidinocyclobutanon und 2.2.4.4-Tetramethyl-1-phenyl-3-pyrrolidinoeyelobutanol/Structural Investigations on Four-Membered Ring Systems, III* Crystal and Molecular Structures of trans-2,4-Bis(trimethylsilyl)-2,4-dihydro-1,3-dithietane-1,1,3,3-tetroxide, 2,2,4,4-Tetramethyl-3-pyrrolidinocyclobutanone and 2,2,4,4-Tetramethyl-1-phenyl-3-pyrrolidinocyclobutanol

Abstract

Abstract The molecular structures of the title compounds have been determined by X-ray methods. In the bis(trimethylsilyl) substituted dithietane the (CH3)3Si groups are in trans position; the C2S2-ring is planar. In the cyclobutanone the pyrrolidine group occupies an equatorial position, as does the phenyl group in the cyclobutanol. In the latter the hydroxyl group is trans to the pyrrolidine ring. The four-membered carbon rings are folded.