INOR 781 |
| As part of our reseacrh in the chemistry of main group compounds with unusual bonding interactions, we have recently reported the synthesis and structure of a cation containing a [R3C-F→CR3]+ bridge. This work was followed by a report from Mueller and co-workers who described the synthesis of symmetrical [R3Si-X-SiR3]+ bridges (X = H, F). In an effort to further understand the factors governing such interactions, we set out to synthesize “hybrid” molecules in which a hydride or a fluoride bridges a carbon and a silicon atom. The silyl ether derivative 1 reacts cleanly with HBF4 in a chloroform/ether solution to afford the cation [2]+ as a dark red BF4 salt (Scheme 1). Although perfectly air stable, [2]+ reacts with hydride to yield 3. Interestingly, single crystal X-ray analysis indicates that [2]+ and 3 feature [R3Si-F→CR3]+ and R3C-H→SiFR3 bridges, respectively. These unusual bridging interactions have been investigated using a combination of experimental and computational methods.
|
|
Main Group Chemistry
9:00 AM-12:20 PM, Wednesday, August 22, 2007 BCEC -- 205C, Oral
Division of Inorganic Chemistry |
