Study of the dynamics of ferrocene enclathrated in β- and γ-cyclodextrins by one-dimensional switching-angle sample spinning NMR spectroscopy

✍ Scribed by Fumio Imashiro; Daisuke Kuwahara; Nobuyuki Kitazaki; Takehiko Terao

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 188 KB
• Volume: 30
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1260300817

✦ Synopsis

Abstract

^13^C chemical shift powder patterns of ferrocene enclathrated in β‐ and γ‐cyclodextrins were measured by one‐dimensional switching‐angle sample spinning NMR spectroscopy. The ferrocene molecules were found to precess with a precession angle of 69° in γ‐cyclodextrin. In β‐cyclodextrin the ferrocene molecules I–III, in different motional states, were enclathrated with populations of 0.42, 0.32 and 0.26, respectively; ferrocene I is tightly enclathrated and rotates around its fivefold axis, whereas ferrocenes II and III precess with precession angles of 30° and 42°, respectively.