Jump to main content
Jump to site search

Issue 7, 2016
Previous Article Next Article

Induced phosphorescence from Pt → Ag and Ag(i)⋯Ag(i) metallophilic interactions in benzenedithiolatodiimine-Pt2/Ag2 clusters: a combined experimental and theoretical investigation

Author affiliations

Abstract

We report the synthesis and luminescence properties of a novel platinum(II)–silver(I) cluster exhibiting supramolecular donor–acceptor dative Pt → Ag bonds as well as d10⋯d10 argentophilic interactions. This compound was obtained by a self-assembly process upon mixing silver triflate with the [Pt(bdt)(bpy)] (1) building block. The new compound was characterized by infrared, NMR (1H, 13C) and UV-vis spectroscopy. In addition, the molecular structure was unequivocally ascertained by a single-crystal X-ray diffraction study and shows that the assembly is identified as [(Pt2Ag2(o-bdt)2(bpy)2](CF3SO3)2 (2). Remarkably, the structure shows that complex 2 exists as two isomers I and II displaying different types of argentophilic interactions Ag⋯Ag as well as Pt → Ag dative bonds. These interactions are highly important and turn on phosphorescent emissions at low temperature depending on the nature of the isomer. The photophysical properties of both isomers were investigated and rationalized through TD-DFT calculations. This work paves the way to the synthesis of novel supramolecular assemblies displaying peculiar properties imparted from metallophilic as well as donor–acceptor metal–metal interactions.

Graphical abstract: Induced phosphorescence from Pt → Ag and Ag(i)⋯Ag(i) metallophilic interactions in benzenedithiolatodiimine-Pt2/Ag2 clusters: a combined experimental and theoretical investigation

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Sep 2015, accepted on 21 Dec 2015 and first published on 11 Jan 2016


Article type: Paper
DOI: 10.1039/C5DT03702F
Dalton Trans., 2016,45, 2906-2913

  •   Request permissions

    Induced phosphorescence from Pt → Ag and Ag(I)⋯Ag(I) metallophilic interactions in benzenedithiolatodiimine-Pt2/Ag2 clusters: a combined experimental and theoretical investigation

    J. Moussa, L. M. Chamoreau, M. P. Gullo, A. Degli Esposti, A. Barbieri and H. Amouri, Dalton Trans., 2016, 45, 2906
    DOI: 10.1039/C5DT03702F

Search articles by author

Spotlight

Advertisements