Neutral interlocked assemblies from anionic pseudorotaxanes coordinated to Sn(IV) and Cu(I) metallic centers
| Autor: | Jedidiah J. Veach, Radu F. Semeniuc, Perry J. Pellechia, Robert R. Baum, Kraig A. Wheeler |
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| Rok vydání: | 2017 |
| Předmět: |
Alternative methods
010405 organic chemistry Chemistry Solid-state Supramolecular chemistry Cationic polymerization Ether 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Metal Crystallography chemistry.chemical_compound visual_art Materials Chemistry visual_art.visual_art_medium Threading (manufacturing) Physical and Theoretical Chemistry Charged species |
| Zdroj: | Inorganica Chimica Acta. 455:52-60 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/j.ica.2016.10.006 |
| Popis: | Anionic [2]pseudorotaxanes have been prepared by threading an axle consisting of two dithiophosphonate donor groups attached to a 1,4,5,8-naphthalenediimide (NDI) core through the cavity of the bis-1,5-(dinaphtho)-38-crown-10 ether (15DN38C10). The subsequent coordination of these interlocked, negatively charged species to R 3 SnCl (R = Me, Ph) and (Ph 3 P) 2 CuNO 3 yields neutral (pseudo)rotaxanes of the general formula NDI[(CH 2 CH 2 O) n (An)PS 2 “M”] 2 ⊂ 15DN38C10 (n = 1, 2; An = anisole; “M” = R 3 Sn or (Ph 3 P) 2 Cu). Solution and solid state studies of the rotaxanation process show that there are two factors influencing the interaction between the axles and the wheel: the size of the stopper and the length of the side-arms of the axles. When the axle termini are bulky enough to prevent threading, the length of the side-arms has little influence over the self-assembly process. In contrast, when the size of the stopper does not preclude the threading of the axle through the cavity of the crown, the length of the side-arms is the determining factor in the rotaxanation process. These results presented here provide an alternative method for the synthesis of counter-ion free interlocked species, based on anionic axles with donor capabilities that would produce a neutral interlocked architecture upon threading and coordination to cationic metal-containing centers . |
| Databáze: | OpenAIRE |
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