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Volumn , Issue 7, 2007, Pages 771-780

Insights into the binding properties of a cuprous ion embedded in the tren cap of a calix[6]arene and supramolecular trapping of an intermediate

Author keywords

[No Author keywords available]

Indexed keywords

CUPROUS ION; NITRILO LIGANDS; SUPRAMOLECULAR TRAPPING; SYMMETRICAL CONE CONFORMATION;

EID: 33846882829     PISSN: 14779226     EISSN: 14779234     Source Type: Journal    
DOI: 10.1039/b614937e     Document Type: Article
Times cited : (21)

References (40)
  • 2
    • 0004281797 scopus 로고
    • University Science Books, Mill Valley, California, For recent reviews on metallo active site models, see the following thematic issues: Biomimetic Inorganic Chemistry, Chem. Rev., 2004, 104, 347-1200 and Inorganic and Bioinorganic Mechanism, Chem. Rev., 2005, 105, 1917-2722
    • S. J. Lippard and J. M. Berg, Principles of Bioinorganic Chemistry, University Science Books, Mill Valley, California, 1994
    • (1994) Principles of Bioinorganic Chemistry
    • Lippard, S.J.1    Berg, J.M.2
  • 35
    • 20444491521 scopus 로고    scopus 로고
    • The comparative values for RCN coordinated to various calix[6]arene-based complexes clearly indicate that a slight variation of the RCN guest positioning due to the different nitrogenous arms capping the small rim accounts at the most for a 0.1 ppm variation in the chemical shift of the α-protons of the coordinated guest (see the ESI). In contrast, we have shown that, in a closely related calix[6]arene-based Zn(ii) system, the up-field shift values for the α-protons of a non-coordinated guest is systematically larger (-0.8 to -1 ppm) compared to the coordinated one, whereas those corresponding to the β and γ positions of the guest alkyl chain are relatively similar. This shows that there is a specific effect due to the presence or absence of a coordination link, whereas the cavity effect and, as a result, the positioning of the guest, is little affected. See:
    • U. Darbost M.-N. Rager S. Petit I. Jabin O. Reinaud J. Am. Chem. Soc. 2005 127 8517
    • (2005) J. Am. Chem. Soc. , vol.127 , pp. 8517
    • Darbost, U.1    Rager, M.-N.2    Petit, S.3    Jabin, I.4    Reinaud, O.5
  • 36
    • 34250666106 scopus 로고    scopus 로고
    • 3CN displayed in Fig. 3, which shows a single conformation for the calixarene core that is filled by the MeCN guest at low T. For all these reasons, we can exclude the alternative hypothesis of an equilibrium between two different coordinated species that would be just conformers, which anyway would be inconsistent with the thermodynamic data, particularly with the entropic values Tmpa stands for tris(2-methylpyridyl) amine.
    • U. Darbost O. Sénèque Y. Li G. Bertho J. Marrot M.-N. Rager O. Reinaud I. Jabin Chem.-Eur. J. 2006 10.1002/chem.200601040
    • (2006) Chem.-Eur. J.
    • Darbost, U.1    Sénèque, O.2    Li, Y.3    Bertho, G.4    Marrot, J.5    Rager, M.-N.6    Reinaud, O.7    Jabin, I.8
  • 38
    • 0442326282 scopus 로고    scopus 로고
    • and references cited therein See ref. 8a and references cited therein The reactivity of these cuprous complexes towards dioxygen is under investigation This was also reported with Cu(i)tmpa complexes:
    • H. V. Rasika Dias T. K. H. H. Goh Polyhedron 2004 23 273 282
    • (2004) Polyhedron , vol.23 , pp. 273-282
    • Rasika Dias, H.V.1    Goh, T.K.H.H.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.