The chemistry of polynuclear compounds. Part XIX. Products from the reaction of dodecacarbonyltriruthenium with di-n-butyl ether

Abstract

Dodecacarbonyltriruthenium reacts with refluxing di-n-butyl ether to produce α-H₄Ru₄(CO)₁₂, Ru₆C(CO)₁₇, and a new isomer of the tetranuclear dihydride (α-)H₂Ru₄(CO)₁₃. Bands appearing at 1248 ± 2 cm.^–1 in the i.r. spectrum of α- H₄Ru₄(CO)₁₂ and at 902 ± cm.^–1 in the spectrum of α-D₄Ru₄(CO)₁₂ are assigned to the vibrations ν(Ru–H–Ru) and ν(Ru–D–Ru) respectively. I.r., n.m.r., and mass spectroscopic data indicate that two forms (α and β) of H₂Ru₄(CO)₁₃ exist. The reaction of Ru₆C(CO)₁₇ with donor ligands, L (L = Ph₃P, (C₆H₄F)₃P, or Ph₃As) have been examined and the monosubstituted complexes Ru₆C(CO)₁₆·L have been characterised.