Rhodium-zentrierte Bildung eines Cyclobutenyl-Liganden und Umlagerung in einen Cyclopentadienyl-Komplex / Rhodium-centered Formation of a Cyclobutenyl Ligand and Rearrangement to a Cyclopentadienyl Complex
Rhodium-zentrierte Bildung eines Cyclobutenyl-Liganden und Umlagerung in einen Cyclopentadienyl-Komplex / Rhodium-centered Formation of a Cyclobutenyl Ligand and Rearrangement to a Cyclopentadienyl Complex
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Rhodium-zentrierte Bildung eines Cyclobutenyl-Liganden und Umlagerung in einen Cyclopentadienyl-Komplex / 以铑为中心的环丁烯基配体的形成以及环戊二烯基复合物的重排
DOI：
10.1515/znb-1988-1201
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
C. Krüger
中科院分区：
文献类型：
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作者：
Jörn P. Müller;M. Tschampel;C. Krüger
摘要 如果 [(cod)RhCl] 2 (cod = 1.5-环辛二烯) 在甲苯烷存在下用甲基锂处理，就会发生两个二苯乙炔分子的环化。分离的 (cod)Rh 配合物 2 含有外型甲基-四苯基环丁烯基配体，并通过 X 射线衍射分析进行了表征。 2在乙腈中的热解引起甲基环丁烯基单元的环膨胀，并与3-甲基-四苯基环丁烯一起形成四苯基环戊二烯基络合物3。讨论了新化合物的机理方面以及光谱数据。
Abstract Cyclization of two diphenylacetylene molecules occurs if [(cod)RhCl] 2 (cod = 1.5-cyclooc-tadiene) is treated with methyllithium in the presence of tolane. The isolated (cod)Rh complex 2 contains an exo-methyl-tetraphenylcyclobutenyl ligand and was characterized by X-ray diffraction analysis. Thermolysis of 2 in acetonitrile causes ring expansion of the methylcyclobutenyl unit with formation of the tretraphenylcyclopentadienyl complex 3 together with 3-methyl-tet-raphenylcyclobutene. Mechanistic aspects are discussed as well as spectroscopic data of the new compounds.