Axially Chiral Allenyl Gold Complexes

详细信息    查看全文

• 作者：Alice Johnson ; Antonio Laguna ; M. Concepci贸n Gimeno
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：September 17, 2014
• 年：2014
• 卷：136
• 期：37
• 页码：12812-12815
• 全文大小：287K
• ISSN：1520-5126

文摘

Unprecedented allenyl gold complexes have been achieved starting from triphenylpropargylphosphonium bromide. Two different coordination modes of the allene isomer of triphenylphosphoniumpropargylide to gold have been found depending on the gold oxidation state. Bromo-, pentafluorophenyl-, and triphenylphosphine鈥揼old(I) allenyl complexes were prepared in which the 伪 carbon coordinates to the gold(I) center. A chiral pentafluorophenyl鈥揼old(III) allenyl complex with the gold atoms coordinated to the 纬 carbon was also prepared. All the complexes have been structurally characterized by X-ray diffraction showing the characteristic distances for a C鈺怌鈺怌 unit.