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Volumn 2, Issue 6, 1996, Pages 729-736

Self-assembling [2]- And [3]rotaxanes from secondary dialkylammonium salts and crown ethers

Author keywords

Merlocking molecules; Molecular recognition; Pseudorotaxanes; Rotaxanes; Template syntheses

Indexed keywords

1 ,3-DIPOLAR CYCLOADDITIONS; ACETYLENEDICARBOXYLATE; HEXAFLUOROPHOSPHATES; MACROCYCLIC POLYETHERS; PSEUDOROTAXANES; ROTAXANES; TEMPLATE SYNTHESIS; TEMPLATE-DIRECTED SYNTHESIS;

EID: 0001603015     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.19960020617     Document Type: Article
Times cited : (181)

References (86)
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    • b) J.-M. Lehn, Science 1993, 260, 1762-1763;
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    • Molecular Engineering for Advanced Materials
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    • b) R. A. Bissell, E. Córdova, J. F. Stoddart, A. E. Kaifer, in Molecular Engineering for Advanced Materials (Eds.: J. Becher, K. Schaumburg), NATO ASI Series, 1995, 456, 29-40.
    • (1995) NATO ASI Series , vol.456 , pp. 29-40
    • Bissell, R.A.1    Córdova, E.2    Stoddart, J.F.3    Kaifer, A.E.4
  • 69
    • 37049083591 scopus 로고
    • A rotaxane is a molecule that contains a linear component (the axle) encircled by one, or more, macrocyclic component (the wheel). In order to prevent the wheel from slipping off the axle, the linear component must be terminated at both ends by large blocking groups or stoppers. The addition of the prefix pseudo to the term rotaxane indicates that in a pseudorotaxane the wheel is free to dissociate from the axle in the same way as ligands may in a more conventional type of complex. The molecular components of a pseudorotaxane are held together only by their mutual noncovalent bonding interactions. See
    • A rotaxane is a molecule that contains a linear component (the axle) encircled by one, or more, macrocyclic component (the wheel). In order to prevent the wheel from slipping off the axle, the linear component must be terminated at both ends by large blocking groups or stoppers. The addition of the prefix pseudo to the term rotaxane indicates that in a pseudorotaxane the wheel is free to dissociate from the axle in the same way as ligands may in a more conventional type of complex. The molecular components of a pseudorotaxane are held together only by their mutual noncovalent bonding interactions. See P. R. Ashton, D. Philp, N. Spencer, J. F. Stoddart, J. Chem. Soc. Chem. Commun. 1991, 1677-1679.
    • (1991) J. Chem. Soc. Chem. Commun. , pp. 1677-1679
    • Ashton, P.R.1    Philp, D.2    Spencer, N.3    Stoddart, J.F.4
  • 72
    • 84891287843 scopus 로고    scopus 로고
    • note
    • 6) and DB24C8 to any significant extent, a stronger base, benzylamine, was found to destroy this 1:1 complex almost totally.
  • 78
    • 84891326074 scopus 로고    scopus 로고
    • note
    • 6 is only sparingly soluble in these chlorinated solvents in the absence of DB 24 C 8.
  • 79
    • 84891282730 scopus 로고    scopus 로고
    • note
    • 6), and the 1:1 complex formed between the two can be calculated from the relative mole fractions of these three species in solution and the total concentrations of the host and guest. See refs. [12] and [14].
  • 80
    • 84891331636 scopus 로고    scopus 로고
    • note
    • 6 in the presence of DB 24 C 8 in a number of different solvents (see refs. [12] and [14]).
  • 81
    • 84891342543 scopus 로고    scopus 로고
    • note
    • - anions in the ratio 3:1.
  • 82
    • 84891336117 scopus 로고    scopus 로고
    • note
    • +- methylene hydrogen atoms to the diammetrically opposite oxygen atom to that involved in [N-H⋯O] bonding within the DB 24 C 8 component.
  • 83
    • 84891340269 scopus 로고    scopus 로고
    • note
    • 6 in the same solvent.
  • 84
    • 84891291801 scopus 로고    scopus 로고
    • note
    • 3 (1:1 v/v) (since reducing the hydrogen-bond accepting ability of the solvent encourages complexation) in the presence of 10 mol equiv of DB 24 C 8 to drive the equilibria toward the 1:2 complex. In this case, two species were observed in solution - the 1:2 complex and uncomplexed excess of the crown ether.
  • 86
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    • Siemens Analytical X-Ray Instruments, Madison, WI
    • SHELXTL (Version 5.03), Siemens Analytical X-Ray Instruments, Madison, WI, 1994.
    • (1994) SHELXTL (Version 5.03)


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.