... A transition-metal-silene complex was first suggested by Pannell (5) (a) Tilley, TD In The Chemistry of Organic Silicon Compounds; Patai, S., Rappoport, Z., Eds.; Wiley: New York, 1989; Chapter 24, p 1415. ... 0 1993 American Chemical Society Page 2. ... Chem. SOC., Vol. 115, No. ...