Ketimine synthesis in the coordination sphere of thallium (I)

  1. Fernández, E.J. 1
  2. Laguna, A. 2
  3. Lasanta, T. 1
  4. López-de-Luzuriaga, J.M. 1
  5. Montiel, M. 1
  6. Elena Olmos, M. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Instituto de Nanociencia y Materiales de Aragón
    info

    Instituto de Nanociencia y Materiales de Aragón

    Zaragoza, España

    ROR https://ror.org/031n2c920

Journal:
Inorganica Chimica Acta

ISSN: 0020-1693

Year of publication: 2011

Volume: 363

Issue: 9

Pages: 1965-1969

Type: Article

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DOI: 10.1016/J.ICA.2009.01.045 SCOPUS: 2-s2.0-77953322263 WoS: WOS:000277934700005 GOOGLE SCHOLAR

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Abstract

[AuTl(C6F5)2(en)] (en = ethylenediamine) reacts with cyclic ketones as cyclopentanone (Cy5{double bond, long}O), cyclohexanone (Cy6{double bond, long}O) or cycloheptanone (Cy7{double bond, long}O) in 1:1 or 1:2 molar ratio leading to products of stoichiometry [AuTl(C6F5)2{Cyx{double bond, long}N(CH2)2NH2}] (x = 5 1, 6 2 or 7 3), or [AuTl(C6F5)2{Cyx{double bond, long}N(CH2)2N{double bond, long}Cyx}] (x = 5 4, 6 5 or 7 6). Addition of ethylenediamine to the ketimine complexes in chloroform regenerates [AuTl(C6F5)2(en)], the starting material, and the free ketimines, as their NMR and mass spectra evidenced. The ketimine complexes display luminescence in solid state at room temperature and at 77 K at higher wavelengths than the diamine starting product (505 nm). The excited states responsible for this behaviour are assigned to orbitals due to the gold-thallium interactions. © 2009 Elsevier B.V. All rights reserved.