Four Thallium (I) Ions Sandwiched by Two Tetraalkynylplatinate ([Pt(C=CR)4]2-) Fragments:Synthesis and Luminescent Behaviour of Pt2Tl4 Species

  1. Berenguer, J.R. 1
  2. Forniés, J. 2
  3. Gómez, J. 1
  4. Lalinde, E. 1
  5. Moreno, M.T. 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

Zeitschrift:
Organometallics

ISSN: 0276-7333

Datum der Publikation: 2001

Ausgabe: 20

Nummer: 23

Seiten: 4847-4851

Art: Artikel

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DOI: 10.1021/OM010554Q SCOPUS: 2-s2.0-0035851936 WoS: WOS:000172243200015 GOOGLE SCHOLAR

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Zusammenfassung

Hexanuclear platinum-thallium complexes [Pt2Tl4(C≡CR)8] (R = tBu (1), Ph (2), SiMe3 (3)) have been constructed by starting from the homoleptic species [Pt(C≡CR)4]2- and TlNO3. X-ray analysis of [Pt2Tl4(C≡CtBu)8] (1) reveals that two eclipsed [Pt(C≡CtBu)4]2- fragments are connected by four bridging thallium(I) ions. Each Tl(I) is positioned away from the Pt fragments and interacts asymmetrically with four alkynyl ligands (μ3-η2:σ(Pt):η2(Tl,Tl)), forming approximately the square-pyramidal geometry A4Tl (A = midpoint of Cα≡Cβ) with the Tl at the apex. The optical properties of these complexes are presented.