Trifunctional organometallic frameworks and cages based on all-cis-1, 3, 5-triethynyl-1, 3, 5-trisilacyclohexanes. Issue 34 (10th April 2019)

• Record Type: Journal Article
• Authors: Weisheim, Eugen; Weigel, Simon; Neumann, Beate; Stammler, Hans-Georg; Mitzel, Norbert W.
• Is Part Of: Chemical communications. Volume 55:Issue 34(2019)
• Page Start: 4985
• Page End: 4988
• Publication Date: 2019-04-10
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc02315a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : All- cis -1, 3, 5-triethynyl-1, 3, 5-triorganyl-1, 3, 5-trisilacyclohexanes offer flexible scaffolds with three concordantly oriented ethynyl groups that can be lithiated and transformed into a range of other cage-like compounds, like the trimercury cage compounds [CH2 Si(R)C2 HgC2 (R)SiCH2 ]3 shown in the picture. Abstract : All- cis -1, 3, 5-triethynyl-1, 3, 5-triorganyl-1, 3, 5-trisilacyclohexanes (organyl R = Me, Ph) offer flexible scaffolds with three concordantly oriented ethynyl groups. Lithiation with n -BuLi affords the dimeric {[CH2 Si(R)(C2 Li)]3 (THF)3 }2 with a drum-like structure in high yields. They can be transformed into other trinuclear organometallic derivatives like the trimercury cage species [CH2 Si(R)C2 HgC2 (R)SiCH2 ]3 .