Analysis of the crystal structures of 1,3-di-tert-butyl-2,3-dihydro-1H-1,3,2-diazasilol-2-ylidene and 1,3-di-tert-butyl-2,2-dichloro-1,3-diaza-2-sila-4-cyclopentene

• Published in: Crystal research and technology (1979) Vol. 39; no. 1; pp. 85 - 88
• Main Authors: Becker, J. S., Staples, R. J., Gordon, R. G.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.01.2004; WILEY‐VCH Verlag
• Subjects: crystal structure; gas phase structure; silylenes
• ISSN: 0232-1300; 1521-4079
• DOI: 10.1002/crat.200310153

The crystal structures of the title compounds, 1,3‐di‐tert‐butyl‐2,3‐dihydro‐1H‐1,3,2‐diazasilol‐2‐ylidene, C10H20N2Si (1) and 1,3‐di‐tert‐butyl‐2,2‐dichloro‐1,3‐diaza‐2‐sila‐4‐cyclopentene, C10H20N2SiCl2 (3) were solved and are reported. Compound (1) crystallized in space group P mmn and each molecule has a mirror plane, which bisects the C‐C backbone of the N‐C‐C‐N framework. Compound (1) was also found to have a 2‐fold twin component. In compound (3) the space group P 21/m results with the mirror plane passing through the N‐C‐C‐N backbone. We compare these structures with the gas phase determination previously reported for (1) and the incomplete single crystal data for (3). (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)