Recent advances in the design and construction of helical coordination polymers

A chiral interdigitated supramolecular network assembled from single-stranded helical tubes

“…One-dimensional coordination polymers, being the simplest topological type of coordination network, are commonly encountered in a number of forms, such as helices, ladders, ribbons and zigzag chains (Leong & Vittal, 2011). Extended helical coordination polymers have attracted growing interest because of their similarities to biological systems and because of their potential utility in enantioselective catalysis (Han & Hong, 2005;Zheng & Lu, 2010). Arguably the most important feature of a helix is its chirality, and to investigate this a number of helical chiral coordination polymers have been assembled using flexible chiral or achiral organic linkers (Anokhina & Jacobson, 2004;Cui et al, 2003;Reger et al, 2011;Yuan et al, 2009).…”

Hydrothermal synthesis and structure of a 2D supramolecular framework with right‐ and left‐helices based on mixed ligands

“…On the other hand, the design and synthesis of helical polymers have aroused more and more people's interests because helicity is an essential element for life and also important in optical devices and catalysis. Consequently, many single-and double-and higher-order stranded helical complexes have been generated by self-assembly processes [13][14][15]. However, these studies have usually been focused on the design and synthesis of polymeric helical assemblies mediated by metal-ligand coordination.…”

Chiral Heterocyclic Ligands. XI. Self-assembly and X-ray Crystal Structures of Chiral Silver Coordination Polymers of (S)-(–)-Nicotine

“…Various approaches have been employed in the design of homochiral coordination polymers. These include the use of chiral metal precursors [28], chiral ligands [29][30][31][32][33][34], chiral counterions [35,36], helicate formation [37][38][39][40][41] and even the use of spontaneous resolution of achiral materials [42][43][44][45].…”

“…Various approaches have been employed in the design of homochiral coordination polymers. These include the use of chiral metal precursors [28], chiral ligands [29][30][31][32][33][34], chiral counterions [35,36], helicate formation [37][38][39][40][41] and even the use of spontaneous resolution of achiral materials [42][43][44][45].We believe that the simplest approach is to use chiral bridging ligands and have recently reported the synthesis and study of some C 2 -symmetric chiral bridging ligands derived from the readily available monoterpene (+)-camphor [46,47] Crystalline products suitable for X-ray structure determination were obtained from three such reactions. Reaction of equimolar quantities of silver nitrate and nicotine in acetonitrile followed by vapour diffusion of diethyl ether into the reaction mixture furnished a crystalline product (2) that was shown by elemental analysis to have a 1:1 metal:ligand ratio.…”