Ship‐in‐bottle formation of Ru 3 (CO) 12 in NaY zeolite

NaY zeolite entrapped Ru 3 (CO) 12 cluster has been synthesized from RuCl 3 ion‐exchanged NaY, which is well characterized by IR and Raman spectroscopies and CO chemisorption. When the Ru 3+ /NaY sample is heated from 298 K to 393 K for 25 h and for 10 h at 393 K, the sample colour changes from dark to brown‐yellow. The in situ infrared spectrum exhibits absorption bands at 2130, 2064, 2040, 2017, 1990, 1953 and 1925 cm −1 . The bands at 2130 cm −1 arises from the Ru m n + (CO) l m =1–3; n = 1–3; l = 1–12). The bands at 2064, 2040, 2017 and 1990 cm −1 are proposed to be associated with the Ru 3 (CO) 12 /NaY, which are close to Ru 3 (CO) 12 crystalline. Furthermore, the Raman results provide bands at 150 and 185 cm −1 , which can be attributed to Ru—Ru bonds of the sample as in the case of Ru 3 (CO) 12 crystalline, for which the A' 1 Ru—Ru stretching mode is assigned to 185 cm −1 and E' 1 Ru—Ru stretching mode is assigned to a band at 150 cm −1 , respectively. CO chemisorption of [Ru 3 ]/NaY gives a CO/Ru ratio of 3.85, which is similar to the stoichiometry of Ru 3 (CO) 12 .