pH-controlled assembly and disassembly of a cryptand/paraquat [2]pseudorotaxane

Chemical Communications

Volumn , Issue 29, 2005, Pages 3655-3657

  Huang, Feihe ^a,b   Switek, Karen A ^a,c   Gibson, Harry W ^a  

^a VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY   (United States)

^b UNIVERSITY OF UTAH   (United States)

^c UNIVERSITY OF MINNESOTA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACID; PARAQUAT; PYRIDINE; ROTAXANE;

ACID BASE BALANCE; ARTICLE; CHEMICAL STRUCTURE; COMPLEX FORMATION; PH MEASUREMENT; PROTON NUCLEAR MAGNETIC RESONANCE;

EID: 23644455792     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/b504250j     Document Type: Article

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29. - salt. Both factors could change the chemical shifts and/or decrease the complexation percentage.
30. The chemical shift of the chloroform proton was affected by the pH changes (Fig. 2). This is not surprising considering that chloroform undoubtedly hydrogen bonds to cryptand 1 and trifluoroacetate anion.