Novel Supramolecular Isomerism in Coordination Polymer Synthesis from Unsymmetrical Bridging Ligands: Solvent Influence on the Ligand Placement Orientation and Final Network Structure
作者:In Su Lee、Dong Mok Shin、Young Keun Chung
DOI:10.1002/chem.200305526
日期:2004.7.5
generated first and its trans coordination configuration should define the placement orientation of L(1) in the resulting polymer of 1. On the other hand, it is presumed that the solvent-coordinated intermediate would not be produced during the formation of 2 due to the weaker coordination ability of EtOH and CH(3)NO(2) molecules. The open framework coordination polymers of 2 and 6 are converted in the
Co(NCS)(2)与1-甲基-1'-(3-吡啶基)-2-(4-吡啶基)乙烯(L(1))的组装表现出[Co(L(1 ))(2)(NCS)(2)](无穷大)是由L(1)在金属中心周围的不同放置方向引起的。在MeOH / H(2)O和EtOH / H(2)O中的反应导致双链结构为1,而在EtOH / CH(3)NO(2)中的反应导致结构为2的开放框架。在MeOH / CH(3)NO(2)溶剂体系中的反应同时得到1和2。1-(3-吡啶基)-2-(4-嘧啶基)乙烯(L(2))与Co(NCS)的组装(2)创建了Co(L(2))(2)(H(2)O)(2)(NCS)(2)(3和4)(Co(L (2))(2)(H(2)O)(2)(NCS)(2)(5)和[Co(L(1))(2)(NCS)(2)的开放骨架配位聚合物)](无穷大)(6)取决于反应溶剂系统。从这些观察,建议在形成1时,首先生成溶剂配位的中间物种,