Chemistry in cages: synthesis and reversible decarbonylation of [Ir6(CO)16] isomers in NaY zeolite
Abstract
[Ir(CO)2(acac)] in the cages of NaY zeolite is converted in CO at 1 bar (1 bar = 105 Pa) to the isomer of [Ir6(CO)16] with edge-bridging CO ligands and in CO + H2 at 20 bar to the isomer of [Ir6(CO)16] with face-bridging ligands, either of which can be reversibly decarbonylated (Hacac = pentane-2–4-dione).