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 

作者机构：Department of Chemistry The Chinese University of Hong Kong Hong Kong China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2010年第53卷第10期

页      面：2123-2128页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

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

主　　题：alkyne carborane diyne ruthenacyclopentatriene ruthenium ruthenium-cyclobutadiene 

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.