P=O functional group-containing cryptands: from supramolecular complexes to poly[2]pseudorotaxanes.
نویسندگان
چکیده
Two types of cryptand-based host-guest complexes were constructed successfully, in which P=O functional groups were located at the different positions of the third arms. Consequently, supramolecular poly[2]pseudorotaxanes with almost linear and zigzag shapes were formed in the solid state.
منابع مشابه
Contrasting biscryptand/dimethyl paraquat [3]pseudorotaxanes: statistical vs. anticooperative complexation behavior.
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.
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 کاملDesign, synthesis and characterization of self-assembled As2L3 and Sb2L3 cryptands.
The syntheses and X-ray crystal structures of six new self-assembled supramolecular As and Sb-containing cryptands are described. Analysis in the context of previously reported As(2)L(3) and Sb(2)L(3) cryptands reveals that small differences in ligand geometries result in significant differences in the helicity of the complexes and the stereochemistry of the metal coordination within the assemb...
متن کاملPseudorotaxanes from self-assembly of two crown ether-based cryptands and a 1,2-bis(pyridinium) ethane derivative.
Pseudorotaxanes from self-assembly of two crown ether-based cryptand wheels and a 1,2-bis(pyridinium) ethane derivative axle were prepared.
متن کاملNMR Studies on Li+, Na+ and K+ Complexes of Orthoester Cryptand o-Me2-1.1.1
Cryptands, a class of three-dimensional macrobicyclic hosts ideally suited for accommodating small guest ions, have played an important role in the early development of supramolecular chemistry. In contrast to related two-dimensional crown ethers, cryptands have so far only found limited applications, owing in large part to their relatively inefficient multistep synthesis. We have recently desc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 51 13 شماره
صفحات -
تاریخ انتشار 2015