Fluxional Behaviour of Isocyanide Derivatives of Dodecacarbonyltetrairidium
作者:Alessandra Orlandi、Renzo Ros、Raymond Roulet
DOI:10.1002/hlca.19910740710
日期:1991.10.30
The fluxional behaviour of [Ir4(CO)11(t-BuNC)] (1) and [Ir4(CO)11(ArNC)] (Ar = 4-methoxyphenyl, 4-tolyl, phenyl, 4-chlorophenyl, 4-nitrophenyl; 2–5) has been investigated by 2D and variable-temperature 13C-NMR. These techniques give new evidence of the processes responsible for CO exchange, namely two successive merry-go-rounds causing Cotton-like scrambling and a CO rotation about one metal center