[Mn(C_(18)H_(16)N_2O_2)_3](C10_4)_2: A Polymeric 34- and 68-Membered Metallacyclic Network Forming a Novel Woven Polycatenated Structure

摘要

The past decade has seen the creation of many elegant interlocked molecular species, the most notable of which have been the catenanes, rotaxanes, and "knots" pioneered principally by Sauvage et al. and Stoddart et al. Key factors in the development of this work have been the use of metal templating combined with appropriate ligand design, and the employment of noncovalent interactions as part of the synthetic strategy. An important feature of both these approaches has been the use of conformationaliy flexible components. Concurrent with this has been the development of three-dimensional networks based primarily on linking metal centers with rodlike or other essentially rigid bridging components. An occasional product of this latter work has been the formation of interpenetrating, adamantyl-like networks. Interleaved, extended networks incorporating flexible bridging units are, however, rare. We report here the discovery of an unusual, new, flexibly bridged, interpenetrating polycatenane.