Oxidation Reactions of the N-Heterocyclic Stannylenes [o-C6H4(NSitBuMe2)2]Sn and [{Fe(η5-C5H4-NSitBuMe2)2}Sn] with Sulfur, Selenium, and Diphenyl Diselenide

Abstract

The N-heterocyclic stannylenes [{Fe(η5-C5H4-NSitBuMe2)2}Sn] (1) and [o-C6H4(NSitBuMe2)2]Sn (2) were prepared in one-pot reactions from SnCl2, LiN(SiMe3)2, and the corresponding diamine, viz. [Fe(η5-C5H4-NHSitBuMe2)2] and o-C6H4(NSiHtBuMe2)2, respectively. Oxidative addition reactions of 1 and 2 with S8 and Se8, respectively, afforded the corresponding 1,3,2,4-dithiadistannetanes ((1S)2, (2S)2), and 1,3,2,4-diselenadistannetanes [(1Se)2, (2Se)2]. The reactions of 1 and 2 with PhSeSePh respectively furnished 1(SePh)2 and 2(SePh)2. The crystal structures of o-C6H4(NSiHtBuMe2)2, 1, 2, (1S)2, (2S)2, (1Se)2, (2Se)2, 1(SePh)2, and 2(SePh)2 were determined by single-crystal X-ray diffraction. Stannylene 2 shows a chain-like aggregation in the solid state due to intermolecular Sn···arene interactions. A short intramolecular CH···Se contact compatible with a hydrogen bond was observed for (1Se)2.