edoc

Controlling Second Coordination Sphere Effects in Luminescent Ruthenium Complexes by External Pressure

Pannwitz, Andrea and Poirier, Stéphanie and Béranger-Desmarais, Nicolas and Prescimone, Alessandro and Wenger, Oliver S. and Reber, Christian. (2018) Controlling Second Coordination Sphere Effects in Luminescent Ruthenium Complexes by External Pressure. Chemistry A European Journal, 24 (31). pp. 7830-7833.

[img] PDF - Accepted Version
518Kb

Official URL: https://edoc.unibas.ch/67404/

Downloads: Statistics Overview

Abstract

Two luminescent heteroleptic Ru(II) complexes with a 2,2’ - biimidazole (biimH 2) ligand form doubly hyrogen-bonded salt bridges to 4-sulfobenzoate anions in single crystals. The structure of one of these cation-anion adducts shows that the biimH 2 ligand is deprotonated. Its 3MLCT luminescence bands does not shift significantly under the influence of an external hydrostatic pressure, a behavior typical for these electronic transitions. In contrast, hydrostatic pressure on the other crystalline cation-anion adduct induces a shift of proton density from the peripheral N-H groups of biimH 2 towards benzoate, leading to a pronounced red- shift of the 3MLCT luminescence band. Such a significant and pressure-tuneable influence from an interaction in the second coordination sphere is unprecedented in artificial small molecule-based systems.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
UniBasel Contributors:Wenger, Oliver and Pannwitz, Andrea and Prescimone, Alessandro
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:1521-3765
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:17 Oct 2019 08:47
Deposited On:02 Jan 2019 14:29

Repository Staff Only: item control page