Preparation and structure of [Rh{(η5-C5H4(2-C5H4N))(η5-C5H4PPh2)}(cod)]PF6 and [Ir(H){Fe[η5-C5H3(2-C5H4N)](η5-C5H4PPh2)}(cod)]PF6; a RhI complex having a C–H ⋯ RhI interaction and a hydrido IrIII complex (where cod = cyclo-octa-1,5-diene)

Abstract

A rhodium complex (2) of [Fe{η⁵-C₅H₄(2-C₅H₄N)}(η⁵-C₅H₄PPh₂)] contains a C–H ⋯ Rh^I interaction, which shows a marked high-frequency shift in the ¹H NMR spectrum, whereas the corresponding iridium complex forms an iridium(III) hydrido complex (3), resulting from the oxidative addition of the C–H bond.