期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 39, 页码 12483-12492出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201402553
关键词
cage compounds; coordination compounds; hydrogen bonding; palladium; supramolecular chemistry
资金
- Council of Scientific and Industrial Research, India
- Department of Science and Technology (DST), New Delhi [DST/SJF/CSA-01/2011-12(c)]
Dynamic supramolecular systems involving a tetratopic palladium(II) acceptor and three different pyridine-and imidazole-based donors have been used for self-selection by a synergistic effect of morphological information and coordination ability of ligands through specific coordination interactions. Three different cages were first synthesized by two-component self-assembly of individual donor and acceptor. When all four components were allowed to interact in a reaction mixture, only one out of three cages was isolated. The preferential binding affinity towards a particular partner was also established by transforming a non-preferred cage into a preferred cage by interaction with the appropriate ligand. Computational studies further supported the fact that coordination interaction of imidazole moiety to Pd-II is enthalpically more preferred compared to pyridine, which drives the selection process. Analysis of crystal packing of both complexes indicated the presence of strong hydrogen bonds between nitrate and water molecules and also H-bonded 3D networks of water. Both complexes exhibit promising proton conductivity (10(-5) to ca. 10(-3) Scm(-1)) at ambient temperature under a relative humidity of circa 98% with low activation energy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据