| Abstract
| - The complexes [RuCp(PR3)(CH3CN)2]PF6 (R= Me, Ph, Cy) react with 1,6-heptadiyne and HC⋮CR‘(R‘ = Ph, C6H9, n-Bu, H), most likely via a ruthenacyclopentatriene intermediate, to give the ruthenium allylcarbene complexes [CpRu(CH-η3-C(CH2)3CCHPR3)]PF6and [CpRu(C(R‘)-η3-CHC(R‘)CHPMe3)]PF6, respectively. In the case of R = Cy, the allyl carbene complexrearranges to afford the complex [CpRu(η3-CH2C(CH2)3CCH2PCy2(η2-C6H9)]PF6, featuring an η2-coordinatedcyclohexenyl ligand. This reaction involves dehydrogenation of one cyclohexyl substituent of the phosphineligand.
- The complexes [RuCp(PR3)(CH3CN)2]PF6 (R = Me, Ph, Cy) react with 1,6-heptadiyne and HC⋮CR‘ (R‘ = Ph, C6H9, n-Bu, H), most likely via a ruthenacyclopentatriene intermediate, to give the ruthenium allyl carbene complexes [CpRu(CH-η3-C(CH2)3CCHPR3)]PF6 and [CpRu(C(R‘)-η3-CHC(R‘)CHPMe3)]PF6, respectively. In the case of R = Cy, the allyl carbene complex rearranges to afford the complex [CpRu(η3-CH2C(CH2)3CCH2PCy2(η2-C6H9)]PF6, featuring an η2-coordinated cyclohexenyl ligand.
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