Benzobis(imidazolium) salts as templates for the self-assembly of starburst [24]pseudorotaxanes and their corresponding carbene-based classic [22]pseudorotaxanes.

Autor:	Foster, Mathew W., Mehl, Benjamin T., Treadwell, Edward M., Semeniuc, Radu F., Wheeler, Kraig A.
Předmět:	DENSITY functional theory RING formation (Chemistry) HYDROGEN bonding
Zdroj:	Chemical Communications; 2/11/2019, Vol. 55 Issue 12, p1786-1789, 4p
Abstrakt:	Benzobis(imidazolium) salts ([BBI-H2-R4]2+, R = alkyl, aryl) interact with crown ethers through a combination of hydrogen bonds, ion–dipole, and π–π stacking interactions to form starburst [24]pseudo-rotaxanes. This new recognition motif allows the extension of four side-arms directly from the cavity of the crown ether, thus positioning the wheel component in a straddled orientation onto the axle, while their carbene-based derivatives show the classical shape of regular [22]pseudorotaxanes. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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