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Volumn 126, Issue 9, 2004, Pages 2939-2943

Kinetics and Thermodynamics of Hexameric Capsule Formation

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; CHEMICAL ACTIVATION; COMPLEXATION; CONFORMATIONS; DISSOCIATION; ELECTRON TRANSITIONS; ENTROPY; POSITIVE IONS; REACTION KINETICS; SOLVENTS; THERMODYNAMICS;

EID: 1542317795     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja037035u     Document Type: Article
Times cited : (157)

References (36)
  • 21
    • 0041821752 scopus 로고    scopus 로고
    • For a very recent example of folding of long aliphatic chains included in the open ended cavity, see: Trambleu, L.; Rebek, J., Jr. Science 2003, 301, 1219-1220.
    • (2003) Science , vol.301 , pp. 1219-1220
    • Trambleu, L.1    Rebek Jr., J.2
  • 28
    • 1542310709 scopus 로고    scopus 로고
    • Unpublished results
    • -]/[1b] = 8 no signals for the encapsulation complex are found in the NMR spectrum at 303 K. The dynamic NOE studies of the open-ended complex reveal typical hydrodynamics of small molecules (see also ref 3c). The monomeric structure of the melting product was additionally proved by determination of diffusion coefficients through the DOSY NMR technique: Palmer, L.; Shivanyuk, A.; Rebek, J., Jr. Unpublished results.
    • Palmer, L.1    Shivanyuk, A.2    Rebek Jr., J.3
  • 29
    • 1542370469 scopus 로고    scopus 로고
    • note
    • This was determined by EXSY experiment (303 K, mixing time 0.3 s) for the signals of the aromatic protons of 1b of the hexamer and monomeric complex.
  • 32
    • 0038021704 scopus 로고    scopus 로고
    • Recently, Avram and Cohen showed that the diffusion coefficient of outer tetraexylammonium cation depends on the hexamer-to-salt ratio. The higher values at the higher ratio can be explained by the outer capsule salt interaction rather than by the formation of monomeric complex: Avram, L.; Cohen, Y. Org. Lett. 2003, 5, 1099-1102.
    • (2003) Org. Lett. , vol.5 , pp. 1099-1102
    • Avram, L.1    Cohen, Y.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.