Matches in SemOpenAlex for { <https://semopenalex.org/work/W2949801023> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2949801023 abstract "The focus of this perspective is the self assembly in aqueous solutions (pH < 3.5) of the synthons sodium p-sulfonatocalix[4]arene and 18-crown-6, or related macrocycles, into globular superanions or ionic capsules, for example {Na+⊂(18-crown-6)(OH2)n}⊂{(p-sulfonatocalix[4]arene(4−))2}7−, n = 0 or 2. These can crystallise, often selectively, polynuclear hydrolytic metal(III) cations [M2(OH)2(H2O)8]4+, [M3(OH)4(H2O)10]5+, [M4(OH)6(H2O)12]6+, M = Cr or Rh, or [Al13O4(OH)24(H2O)12]7+, depending on the pH and other synthetic parameters, which are established using a combinatorial approach. These superanions are ambivalent; two calixarenes shroud a crown ether with a central sodium ion bound also by two trans-water molecules or two oxygen centres of sulfonate groups from each of the calixarenes. Electrostatic repulsion between the negatively charged calixarenes is compensated by the large polynuclear cations interacting with the negatively charged hydrophilic equatorial region of the capsule, and some protonation of the sulfonate groups. Similarly, protonated cyclam forms a capsule with two calixarenes and crystallises [Cr2(OH)2(H2O)8]4+. Lanthanide(III) ions form a range of complexes at specific pH in the presence of the calixarene and crown ether, including complexes containing the capsule [{18-crown-6}⊂{(M(H2O)73+)1.33(p-sulfonatocalix[4]arene(4−))}2], for the smaller lanthanides, or the ferris wheel type structure [{La3+⊂(18-crown-6)(OH2)3}∩{(p-sulfonatocalix[4]arene(4−) + 2H+)}]+, for the larger lanthanide. Only some of the continuous structures have an up–down bilayer arrangement of calixarenes." @default.
- W2949801023 created "2019-06-27" @default.
- W2949801023 creator A5082901509 @default.
- W2949801023 creator A5084415049 @default.
- W2949801023 date "2001-01-09" @default.
- W2949801023 modified "2023-09-24" @default.
- W2949801023 title "ChemInform Abstract: Russian Doll Assembled Superanion Capsule-Metal Ion Complexes: Combinatorial Supramolecular Chemistry in Aqueous Media" @default.
- W2949801023 cites W1992852868 @default.
- W2949801023 doi "https://doi.org/10.1002/chin.200102254" @default.
- W2949801023 hasPublicationYear "2001" @default.
- W2949801023 type Work @default.
- W2949801023 sameAs 2949801023 @default.
- W2949801023 citedByCount "0" @default.
- W2949801023 crossrefType "journal-article" @default.
- W2949801023 hasAuthorship W2949801023A5082901509 @default.
- W2949801023 hasAuthorship W2949801023A5084415049 @default.
- W2949801023 hasConcept C115624301 @default.
- W2949801023 hasConcept C145148216 @default.
- W2949801023 hasConcept C178790620 @default.
- W2949801023 hasConcept C179104552 @default.
- W2949801023 hasConcept C184651966 @default.
- W2949801023 hasConcept C185592680 @default.
- W2949801023 hasConcept C199164860 @default.
- W2949801023 hasConcept C201770740 @default.
- W2949801023 hasConcept C2777255693 @default.
- W2949801023 hasConcept C30095370 @default.
- W2949801023 hasConcept C32909587 @default.
- W2949801023 hasConcept C544153396 @default.
- W2949801023 hasConcept C71240020 @default.
- W2949801023 hasConcept C8010536 @default.
- W2949801023 hasConcept C83263248 @default.
- W2949801023 hasConcept C93275456 @default.
- W2949801023 hasConceptScore W2949801023C115624301 @default.
- W2949801023 hasConceptScore W2949801023C145148216 @default.
- W2949801023 hasConceptScore W2949801023C178790620 @default.
- W2949801023 hasConceptScore W2949801023C179104552 @default.
- W2949801023 hasConceptScore W2949801023C184651966 @default.
- W2949801023 hasConceptScore W2949801023C185592680 @default.
- W2949801023 hasConceptScore W2949801023C199164860 @default.
- W2949801023 hasConceptScore W2949801023C201770740 @default.
- W2949801023 hasConceptScore W2949801023C2777255693 @default.
- W2949801023 hasConceptScore W2949801023C30095370 @default.
- W2949801023 hasConceptScore W2949801023C32909587 @default.
- W2949801023 hasConceptScore W2949801023C544153396 @default.
- W2949801023 hasConceptScore W2949801023C71240020 @default.
- W2949801023 hasConceptScore W2949801023C8010536 @default.
- W2949801023 hasConceptScore W2949801023C83263248 @default.
- W2949801023 hasConceptScore W2949801023C93275456 @default.
- W2949801023 hasLocation W29498010231 @default.
- W2949801023 hasOpenAccess W2949801023 @default.
- W2949801023 hasPrimaryLocation W29498010231 @default.
- W2949801023 hasRelatedWork W1484621747 @default.
- W2949801023 hasRelatedWork W1858423646 @default.
- W2949801023 hasRelatedWork W1971682748 @default.
- W2949801023 hasRelatedWork W1971770756 @default.
- W2949801023 hasRelatedWork W1976829699 @default.
- W2949801023 hasRelatedWork W1982349188 @default.
- W2949801023 hasRelatedWork W1984193474 @default.
- W2949801023 hasRelatedWork W1987590106 @default.
- W2949801023 hasRelatedWork W2017703099 @default.
- W2949801023 hasRelatedWork W2029231663 @default.
- W2949801023 hasRelatedWork W2037155568 @default.
- W2949801023 hasRelatedWork W2045362145 @default.
- W2949801023 hasRelatedWork W2053862525 @default.
- W2949801023 hasRelatedWork W2068783897 @default.
- W2949801023 hasRelatedWork W2075615075 @default.
- W2949801023 hasRelatedWork W2091386743 @default.
- W2949801023 hasRelatedWork W2100548838 @default.
- W2949801023 hasRelatedWork W2114996970 @default.
- W2949801023 hasRelatedWork W2128910155 @default.
- W2949801023 hasRelatedWork W2794749776 @default.
- W2949801023 isParatext "false" @default.
- W2949801023 isRetracted "false" @default.
- W2949801023 magId "2949801023" @default.
- W2949801023 workType "article" @default.