The carbon carbon coupling reaction by nucleophilic attack of (CO) 5Cr (CN–CFCF2) 1 by lithium or Grignard compounds 2a–i yields the isocyanide complexes (CO) 5Cr (CN–CFCF– R) 3a–i (a R= CHCH2, b R= CHCF2, c R= CCH, d R= CC–SiMe3, e R= CC–Ph, f R= CC– C6F4OMe, g R= CC–C6H3 (CF3) 2, h R= C6F5, i R= C6H3 (CF3) 2) as mixtures of E and Z isomers. The dinuclear complexes 5a–c are obtained from the reaction of 1 with the ...
