Amidines as Effective Ancillary Ligands in Copper-catalyzed Hydrogenation of Carbon Dioxide
作者:Ryo Watari、Shigeki Kuwata、Yoshihito Kayaki
DOI:10.1246/cl.190873
日期:2020.3.5
Mononuclear Cu(II) complexes bearing a bidentate bisamidine ligand were newly synthesized and characterized. The catalytic activity was evaluated in the hydrogenation of carbondioxide to formate s...
新合成并表征了带有双齿双脒配体的单核铜 (II) 配合物。对二氧化碳加氢制甲酸盐的催化活性进行了评价。
Comparative structural coordination chemistry of two tricyclic bisamidines
作者:Jingwei Li、Daniel W. Widlicka、Kerry Fichter、David P. Reed、Gary R. Weisman、Edward H. Wong、Antonio DiPasquale、Katie J. Heroux、James A. Golen、Arnold L. Rheingold
DOI:10.1016/j.ica.2010.08.015
日期:2010.12
The tricyclic bisamidines L1 and L2 are designed to be preconstrained so as to present synperiplanar donor sites for metal coordination. Their very different bite angles of 35 degrees and 70 degrees result from the incorporation of two five-membered instead of six-membered rings in their respective backbones. Distinct coordination preferences in a variety of metal complexes have now been confirmed by X-ray structural studies. While L1 afforded monodentate, symmetrical and unsymmetrical chelating as well as bimetallic bridging modes in its complexes, L2 has been found exclusively in a bidentate chelating mode. (C) 2010 Elsevier B.V. All rights reserved.