Dpto. de Química Inorgánica y Orgánica, Universitat Jaume I. Avda., Vicente Sos Baynat s/n, Castellón, E-12071, Spain.
Dalton Trans. 2010 Jul 21;39(27):6339-43. doi: 10.1039/c003220d. Epub 2010 Jun 2.
A series of bis-NHC-complexes of Ru and Ir have been tested in the reduction of carbon dioxide to formate. The use of one of the '(eta(6)-arene)Ru(bis-NHC)' complexes (labeled as 1 in the text) in the reduction of carbon dioxide with hydrogen affords a maximum TON value of 23000 at 200 degrees C. The same complexes were used in the reduction of carbon dioxide with iPrOH by the transfer hydrogenation methodology. For this reaction, a maximum TON value of 874 was achieved, the highest reported to date for this type of process. The activity of the catalyst is highly dependent on its stability because the complex has to stand the severe reaction conditions used in the process (200 degrees C).
一系列钌和铱的双-NHC-配合物已被测试用于将二氧化碳还原为甲酸盐。在二氧化碳与氢气的还原反应中使用一种 '(eta(6)-芳烃)Ru(bis-NHC)' 配合物（在文本中标记为 1），在 200°C 时可获得最高 TON 值 23000。相同的配合物也用于二氧化碳与异丙醇的还原，采用转移氢化方法。对于该反应，TON 值最高达到 874，这是迄今为止该类型反应中报道的最高值。催化剂的活性高度依赖于其稳定性，因为该配合物必须承受该过程中使用的苛刻反应条件（200°C）。
