1344673-65-9Relevant academic research and scientific papers
C-CN bond activation of benzonitrile with [Rh -I(dippe)] -
Grochowski, Matthew R.,Morris, James,Brennessel, William W.,Jones, William D.
, p. 5604 - 5610 (2012/01/04)
The complex [Rh(dippe) (μ-Cl)]2 (1) was reduced with potassiummetal to produce the highly reactive Rh-I species [Rh(dippe) (μ-K 3 THF)]2 (2). 2 was characterized by NMR spectroscopy ( 31P, 1H) and IR spectroscopy after forming the derivative K[Rh(dippe) (CO)2] (2a). The C-CN bond of benzonitrile was cleaved by oxidative addition when it was reacted stoichiometrically with 2 to form the anionic Rh(I) complex K[Rh(dippe) (CN) (Ph)] (3). 3 has been characterized by NMR spectroscopy (31P, 1H, 13C), and by the use of 13C-labeled benzonitrile. C-CN bond cleavage was also attempted by reacting benzonitrile with the zwitterionic complex [Rh(dippe) (μ6-Ph-BPh3)] (4). A product 5 was formed from reaction with 2 equiv of benzonitrile. Reaction with 13C-labeled benzonitrile has ruled out the possibility of C-CN cleavage in this species, and a C-Hbond activation pathway is operative instead.
