Contrasting biscryptand/dimethyl paraquat [3]pseudorotaxanes: statistical vs. anticooperative complexation behavior.
نویسندگان
چکیده
Via the self-assembly of two bis(meta-phenylene)-32-crown-10-based cryptands, bearing covalent and metal complex (ferrocene) linkages, with dimethyl paraquat, novel [3]pseudorotaxanes were formed statistically and anticooperatively, respectively.
منابع مشابه
Pseudorotaxanes and Supramolecular Polypseudorotaxanes Based on Dibenzo-24-Crown-8/Paraquat recognition motif
By preparation and characterization of a series of pesudorotaxanes based on DB24C8 and paraquat derivatives, it was found that these complexes were stabilized by N⋅⋅⋅O interactions, C-H⋅⋅⋅O hydrogen bonding, and face-to-face π-stacking interactions. Because methyl protons of paraquat are involved in hydrogen bonding to the host, the substitution of any methyl hydrogen on paraquat causes apparen...
متن کاملSelf-assembly of cyclobis(paraquat-p-phenylene)s.
Cyclobis(paraquat-p-phenylene)s complexed with anionic surfactants exhibit liquid-crystalline states and form pseudorotaxanes with tetrathiafulvalene in the condensed states.
متن کاملDocking in metal-organic frameworks.
The use of metal-organic frameworks (MOFs) so far has largely relied on nonspecific binding interactions to host small molecular guests. We used long organic struts (approximately 2 nanometers) incorporating 34- and 36-membered macrocyclic polyethers as recognition modules in the construction of several crystalline primitive cubic frameworks that engage in specific binding in a way not observed...
متن کاملComplex interactions of pillar[5]arene with paraquats and bis(pyridinium) derivatives.
The complexation behavior of a series of paraquats (G1.2PF(6)-G5.2PF(6)) and bis(pyridinium) derivatives (G6.2PF(6)-G14.2PF(6)) with pillar[5]arene (P5A) host has been comprehensively investigated by (1)H NMR, ESI mass and UV-vis absorption spectroscopy. It is found that P5A forms 2 : 1 external complexes with N,N'-dialkyl-4,4'-bipyridiniums (G1-G4.2PF(6)); while it forms 1 : 1 pseudorotaxane-t...
متن کاملComplexation between triptycene-based macrotricyclic host and π-extended viologens: formation of supramolecular poly[3]pseudorotaxanes.
Triptycene-based macrotricyclic host containing two dibenzo-30-crown-10 moieties could form ladder-like supramolecular poly[3]pseudorotaxanes with π-extended viologens in both high concentration solution and solid state.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Organic & biomolecular chemistry
دوره 9 20 شماره
صفحات -
تاریخ انتشار 2011