| Автор | Tei, Lorenzo |
| Автор | Blake, Alexander J. |
| Автор | George, Michael W. |
| Автор | Weinstein, Julia A. |
| Автор | Wilson, Claire |
| Автор | Schröder, Martin |
| Дата выпуска | 2003 |
| dc.description | A new asymmetric derivative of 1,4,7-triazacyclononane with two iminocarboxylic pendant arms attached to the macrocyclic ring has been designed and prepared. Lanthanide complexes of L<sup>1</sup> and of its previously reported symmetric analogue L, containing three pendant arms, are described. The complexes [Ln(L)] (Ln = Gd, Eu, Dy) and [Ln(L<sup>1</sup>)X] (Ln = Y, Gd, Eu, Dy) (X = Cl<sup>â </sup> or CH3COO<sup>â </sup>) have been synthesised by Schiff-base condensation of 1,4,7-tris(2-aminoethyl)-1,4,7-triazacyclononane (1) or 1,4-bis(2-aminoethyl)-1,4,7-triazacyclononane (2), respectively, with sodium pyruvate on a lanthanide ion template. The complexes [Gd(L)] and [Gd(L<sup>1</sup>)(CH3CO2)] have been structurally characterised by X-ray crystallography. <sup>1</sup>H NMR spectroscopic investigation of diamagnetic [La(L)] and [Y(L<sup>1</sup>)] in D2O reveals that these complexes show a different pH dependence for hydrolysis of the C.dbd;N bonds in L and L<sup>1</sup>. Hydrolysis occurs within several hours for [Y(L<sup>1</sup>)] at neutral pH, while acidic media are required to achieve the same rate of hydrolysis of [La(L)]. A similar value for the number of water molecules (q) directly bound to the metal centre for lanthanide complexes of L (q = 0) and L<sup>1</sup> (q = 1) has been estimated by three different approaches: NMR relaxivity studies for Gd<sup>III</sup> complexes, luminescence spectroscopy for Eu<sup>III</sup> complexes and Dy<sup>III</sup>-induced <sup>17</sup>O NMR water shift experiments for Dy<sup>III</sup> complexes. |
| Формат | application.pdf |
| Издатель | Royal Society of Chemistry |
| Название | Lanthanide complexes of iminocarboxylate ligands derived from 1,4,7-triazacyclononane: structural characterisation and relaxivity of the GdIII and luminescence of the EuIII complexesElectronic supplementary information (ESI) available: 1H NMR spectra of [Y(L1)(CH3CO2)] (6) in D2O at 298 K and 1H NMR data on acid-catalysed hydrolysis of [La(L)] (5) in D2O (pD = 4.4). See http://www.rsc.org/suppdata/dt/b2/b209090m/ |
| Тип | research-article |
| DOI | 10.1039/b209090m |
| Electronic ISSN | 1477-9234 |
| Print ISSN | 1477-9226 |
| Журнал | Dalton Transactions |
| Первая страница | 1693 |
| Последняя страница | 1700 |
| Аффилиация | Tei Lorenzo; School of Chemistry, The University of Nottingham |
| Аффилиация | Blake Alexander J.; School of Chemistry, The University of Nottingham |
| Аффилиация | George Michael W.; School of Chemistry, The University of Nottingham |
| Аффилиация | Weinstein Julia A.; School of Chemistry, The University of Nottingham |
| Аффилиация | Wilson Claire; School of Chemistry, The University of Nottingham |
| Аффилиация | Schröder Martin; School of Chemistry, The University of Nottingham |
| Выпуск | 9 |
| Библиографическая ссылка | R. B. Lauffer, P. Caravan, J. J. Ellison, T. J. McMurry, R. B. Lauffer, Chem. Rev., 1987, 87, 901, Chem. Rev., 1999, 99, 2293, The Chemistry of Contrast Agents in Medical Magnetic Resonance Imaging, ed. A. Merbach, E. Toth, Wiley, Chichester, 2001 |
| Библиографическая ссылка | S. Aime, M. Botta, M. Fasano, E. Terreno, M. Botta, Chem. Soc. Rev., 1998, 27, 19, Eur. J. Inorg. Chem., 2000, 399 |
| Библиографическая ссылка | N. Sabbatini, M. Guardigli, J.-M. Lehn, Coord. Chem. Rev., 1993, 123, 201 |
| Библиографическая ссылка | G. Mathis, E. F. G. Dickson, A. Pollak, E. P. Diamandis, Clin. Chem., 1995, 41, 1391, J. Photochem. Photobiol. B: Biol., 1995, 27, 3 |
| Библиографическая ссылка | D. Parker, J. A. G. Williams, D. Parker, P. K. Senanayake, J. A. G. Williams, J. Chem. Soc., Dalton Trans., 1996, 3613, J. Chem. Soc., Perkin Trans. 2, 1998, 2129 |
| Библиографическая ссылка | J. L. Sessler, N. A. Tvermoes, J. Davis, P. Anzenbacher, K. Jursikova, W. Sato, D. Seidel, V. Lynch, C. B. Black, A. Try, B. Andrioletti, G. Hemmi, T. D. Mody, D. J. Magda, V. Kral, J. L. Sessler, R. A. Miller, Pure Appl. Chem., 1999, 71, 2009, Biochem. Pharmacol., 2000, 59, 733 |
| Библиографическая ссылка | P. R. Selvin, T. M. Rana, J. E. Hearst, J. Coates, P. G. Sammes, R. M. West, J. Am. Chem. Soc., 1994, 116, 6029, J. Chem. Soc., Chem. Commun., 1995, 1107 |
| Библиографическая ссылка | W. A. Volkert, T. J. Hoffman, D. Parker, C. J. Anderson, M. J. Welch, Chem. Rev., 1999, 99, 2269, Comprehensive Supramolecular Chemistry, J.-M. Lehn, Pergamon, Oxford, 1996, vol. 1, pp. 487â 536, Chem. Rev., 1999, 99, 2219 |
| Библиографическая ссылка | S. Aime, M. Botta, S. G. Crich, G. Giovenzana, G. Palmisano, M. Sisti, U. Casellato, S. Tamburini, P. Tomasin, P. A. Vigato, S. Aime, A. Barge, M. Botta, Bioconjugate Chem., 1999, 10, 192, Chem. Commun., 2000, 145 |
| Библиографическая ссылка | L. Tei, G. Baum, A. J. Blake, D. Fenske, M. Schröder, J. Chem. Soc., Dalton Trans., 2000, 2793 |
| Библиографическая ссылка | L. Tei, A. J. Blake, F. A. Devillanova, A. Garau, V. Lippolis, C. Wilson, M. Schröder, Chem Commun., 2001, 2582 |
| Библиографическая ссылка | R. D. Shannon, Acta Crystallogr., Sect. A, 1976, 32, 751 |
| Библиографическая ссылка | M. G. B. Drew, Coord. Chem. Rev., 1977, 24, 179 |
| Библиографическая ссылка | A. J. Blake, D. M. J. Doble, W.-S. Li, M. Schröder, J. Chem. Soc., Dalton Trans., 1997, 3655 |
| Библиографическая ссылка | D. M. J. Doble, R. D. Kay, C. H. Benison, A. J. Blake, X. Lin, C. Wilson, M. Schröder, D. M. J. Doble, A. J. Blake, P. A. Cooke, S. Parsons, M. Schröder, D. M. J. Doble, A. J. Blake, D. E. Hibbs, M. S. Jackson, W-S. Li, M. Schröder, Int. Pat., J. Inclusion Phenom. Macrocycl. Chem., 2001, 41, 23, Inorg. Chim. Acta, 2002, 331, 336, Z. Anorg. Allg. Chem., 2002, 628, 2311 |
| Библиографическая ссылка | J. I. Bruce, R. S. Dickins, L. J. Govenlock, T. Gunnlaugsson, S. Lopinski, M. P. Lowe, D. Parker, R. D. Peacock, J. J. B. Perry, S. Aime, M. Botta, J. Am. Chem. Soc., 2000, 122, 9674 |
| Библиографическая ссылка | J. Huskens, J. A. Peters, H. Vanbekkum, G. R. Choppin, J. Huskens, A. D. Kennedy, H. Vanbekkum, J. A. Peters, M. C. Alpoim, A. M. Urbano, C. Geraldes, J. A. Peters, P. Caravan, T. Hedlund, S. Liu, S. Sjoberg, C. Orvig, Inorg. Chem., 1995, 34, 1756, J. Am. Chem. Soc., 1995, 117, 375, J. Chem. Soc., Dalton Trans., 1992, 463, J. Am. Chem. Soc., 1995, 117, 11230 |
| Библиографическая ссылка | C. Cossy, A. C. Barnes, J. E. Enderby, A. E. Merbach, L. Helm, F. Foglia, T. Kowall, A. E. Merbach, J. Chem. Phys., 1989, 90, 3254, J. Phys-Condens. Matter, 1994, 6, A137, and references therein |
| Библиографическая ссылка | Y. Haas, G. Stein, Y. Haas, G. Stein, J. Phys. Chem., 1971, 75, 3668, J. Phys. Chem., 1971, 75, 3677 |
| Библиографическая ссылка | A. Beeby, I. M. Clarkson, R. S. Dickins, S. Faulkner, D. Parker, L. Royle, A. S. de Sousa, J. A. G. Williams, M. Woods, J. Chem. Soc., Perkin Trans. 2, 1999, 493 |
| Библиографическая ссылка | D. Parker, Coord. Chem. Rev., 2000, 205, 109, and references therein |
| Библиографическая ссылка | S. Aime, M. Botta, D. Parker, J. A. G. Williams, J. Chem. Soc., Dalton Trans., 1996, 17 |
| Библиографическая ссылка | M. P. Lowe, D. Parker, M. P. Lowe, D. Parker, M. P. Lowe, D. Parker, O. Reany, S. Aime, M. Botta, G. Castellano, E. Gianolio, R. Pagliarin, Inorg. Chim. Acta, 2001, 317, 163, Chem. Commun., 2000, 707, J. Am. Chem. Soc., 2001, 123, 7601 |
