Formation of [RuR(CO)2(η5-C5H5)](R = C10H13 or COC10H13) during the reaction of [Ru3(CO)12] with cyclopentadiene

Abstract

The compound [RuH(CO)₂(η⁵-C₅H₅)] formed in situ during the reaction of [Ru₃(CO)₁₂] with cyclopentadiene has been found to add in a stereo- and regio-specific manner to endo-dicyclopentadiene to afford the alkyl derivative [Ru(C₁₀H₁₃)(CO)₂(η⁵-C₅H₅)] which undergoes a facile carbonylation to the acyl complex [Ru(COC₁₀H₁₃)-(CO)₂(η⁵-C₅H₅)]. The structure of [Ru(COC₁₀H₁₃)(CO)₂(η⁵-C₅H₅)] was determined by a single-crystal X-ray diffraction analysis; crystals are triclinic, space group P, a= 6.342(1), b= 7.144(2), c= 81.491(4)Å, α= 86.65(3), β= 85.98(4), γ= 71.41(2)°, and Z= 2. The final R value was 0.034 for 2402 observed reflections.