Reaction of [η~5:σ-Me_2C(C_5H_4)(C_2B_(10)H_(10))]Ru(NCCH_3)_2 with internal alkynes:Synthesis and structural characterization of ruthenium-cyclobutadiene and ruthenacyclopentatriene complexes  

作　　者：QIU ZaoZao, SUN Yi & XIE ZuoWei Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China 

出　　处：《Science China Chemistry》2010年第10期2123-2128,共6页中国科学（化学英文版）

基　　金：supported by the Research Grants Council of The Hong Kong Special Administration Region (403907)

摘　　要：Reaction of [η5:σ-Me2C(C5H4)(C2B10H10)]Ru(NCCH3)2 (1) with R1C≡CR1(R1 = Et, Ph) in toluene at 80 °C yielded organoruthenium cyclobutadiene complexes [η5:σ-Me2C(C5H4)(C2B10H10)]Ru(-4-C4R14) in 】80% yield. Treatment of 1 with diynes R2C≡C(CH2)3C≡CR2 (R2 = Me, Et) in toluene at room temperature yielded ruthenacyclopentatrienes [η5:σ-Me2C (C5H4)(C2B10H10)]Ru[=C2(R2)2C2(CH2)3] in 】85% yield. These new complexes were fully characterized by various spectroscopic techniques, elemental analyses and single-crystal X-ray diffraction studies. The possible reaction mechanism was proposed.Reaction of [η5:σ-Me2C(C5H4)(C2B10H10)]Ru(NCCH3)2 (1) with R1C≡CR1(R1 = Et, Ph) in toluene at 80 °C yielded organoruthenium cyclobutadiene complexes [η5:σ-Me2C(C5H4)(C2B10H10)]Ru(-4-C4R14) in >80% yield. Treatment of 1 with diynes R2C≡C(CH2)3C≡CR2 (R2 = Me, Et) in toluene at room temperature yielded ruthenacyclopentatrienes [η5:σ-Me2C (C5H4)(C2B10H10)]Ru[=C2(R2)2C2(CH2)3] in >85% yield. These new complexes were fully characterized by various spectroscopic techniques, elemental analyses and single-crystal X-ray diffraction studies. The possible reaction mechanism was proposed.

关 键 词：ALKYNE CARBORANE DIYNE ruthenacyclopentatriene RUTHENIUM ruthenium-cyclobutadiene 

分 类 号：O621.13[理学—有机化学]