Issue 7, 2016

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

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

Supplementary files

Article information

Article type
Paper
Submitted
22 Sep 2015
Accepted
21 Dec 2015
First published
11 Jan 2016

Dalton Trans., 2016,45, 2906-2913

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements