The construction of catenanes, comprised of between two and seven interlocked rings, has been achieved. Two tris-1,5-naphtho-57-crown-15 macrocycles template the formation of cyclobis(paraquat-4,4'-biphenylene) to give a [3]catenane, which acts as a template for the construction of one and then another cyclobis(paraquat-p-phenylene) to give a [4]- and [5]catenane (Olympiadane). When high pressure was used in these templated syntheses, a [6]- and [7]catenane, as well as a [5]catenane that is topologically isomeric with Olympiadane, were also obtained. X-ray analyses of the [3]-, [5]-, and [7]catenanes reveal an optimum use of electrostatic, pi-pi stacking, [C-H ...pi] interactions, and [C-H ... O] hydrogen bonds in the organization of the component rings within the molecules. Noteworthy in the [7]catenane structure is the location of four of the PF6- anions within voids present in the 20(+) ion. Temperature-dependent H-1 NMR spectroscopic studies and electrochemical investigations have revealed the dynamic and redox behavior of these catenanes in solution.
The solid-state self-organisation of a self-assembled [2]catenane
作者:David B. Amabilino、Peter R. Ashton、J. Fraser Stoddart、Stephan Menzer、David J. Williams
DOI:10.1039/c39940002475
日期:——
The reluctance of a [2]catanane, comprised cf macrocycles incorporating π-donors and π-acceptors, to be catenated further to form a [3]catenane may be explained by the molecular arrangement revealed in the solid-state structure of the [2]catenane, which shows all aromatic units to be involved in intramolecularπ–π stacking interactions; moreover, the molecules self-organise in the solid-state to form a quilt-like two-dimensional array by virtue of intermolecularπ–π stacking interactions.
Template-Directed Syntheses, Spectroscopic Properties, and Electrochemical Behavior of [n]Catenanes
作者:Peter R. Ashton、Virna Baldoni、Vincenzo Balzani、Christian G. Claessens、Alberto Credi、H. D. Andreas Hoffmann、Françisco M. Raymo、J. Fraser Stoddart、Margherita Venturi、Andrew J. P. White、David J. Williams
Catenanes composed of two, three, five, or seven interlocked macrocycles have been synthesized in yields ranging from 1 to 30%. Their template-directed syntheses rely on a series of cooperative noncovalent bonding interactions between π-electron rich 1,5-dioxynaphthalene ring systems and π-electron deficient bipyridinium units which are incorporated within the macrocyclic components. The interlocked
作者:David B. Amabilino、Peter R. Ashton、Vincenzo Balzani、Sue E. Boyd、Alberto Credi、Ju Young Lee、Stephan Menzer、J. Fraser Stoddart、Margherita Venturi、David J. Williams
DOI:10.1021/ja9720873
日期:1998.5.1
The construction of catenanes, comprised of between two and seven interlocked rings, has been achieved. Two tris-1,5-naphtho-57-crown-15 macrocycles template the formation of cyclobis(paraquat-4,4'-biphenylene) to give a [3]catenane, which acts as a template for the construction of one and then another cyclobis(paraquat-p-phenylene) to give a [4]- and [5]catenane (Olympiadane). When high pressure was used in these templated syntheses, a [6]- and [7]catenane, as well as a [5]catenane that is topologically isomeric with Olympiadane, were also obtained. X-ray analyses of the [3]-, [5]-, and [7]catenanes reveal an optimum use of electrostatic, pi-pi stacking, [C-H ...pi] interactions, and [C-H ... O] hydrogen bonds in the organization of the component rings within the molecules. Noteworthy in the [7]catenane structure is the location of four of the PF6- anions within voids present in the 20(+) ion. Temperature-dependent H-1 NMR spectroscopic studies and electrochemical investigations have revealed the dynamic and redox behavior of these catenanes in solution.
Amabilino, David B.; Ashton, Peter R.; Reder, Anatoli S., Angewandte Chemie, 1994, vol. 106, # 12, p. 1316 - 1319
作者:Amabilino, David B.、Ashton, Peter R.、Reder, Anatoli S.、Spencer, Neil、Stoddart, J. Fraser