Discuss the following structure (η5-C5H5)(PPh3)Ir(η2-NCC6H4Cl). What is somewhat unique about the structure?

1 Answer
Apr 9, 2018

The structure is fluxional. Here are two views of the compound:

The η2 interaction with ClC6H4CN allows for free rotation of the CN bond at room temperature. If the substance is cooled down, the free bond rotation will slow down.