Issue 17, 2014

Insight into the dynamic ligand exchange process involved in bipyridyl linked arene ruthenium metalla-rectangles

Abstract

The dynamic ligand exchange behavior of cationic arene ruthenium metalla-rectangles of the type [(p-cymene)4Ru4(OO∩OO)2(N∩N)2]4+ (OO∩OO = oxalato, 2,5-dioxydo-1,4-benzoquinonato, 5,8-dioxydo-1,4-naphthoquinonato; N∩N = 4,4′-bipyridine-H8, 4,4′-bipyridine-D8) has been studied in solution. The robustness of the rectangular architecture has been evidenced by NMR and ESI mass spectrometry. Thermodynamic and kinetic aspects of the ligand exchange process have been explored using 1H/2D isotope labeling of the 4,4′-bipyridine connectors. This study shows that ligand exchange does not proceed spontaneously for these metalla-assemblies, even at high temperature, unless an external stimulus is applied.

Graphical abstract: Insight into the dynamic ligand exchange process involved in bipyridyl linked arene ruthenium metalla-rectangles

Supplementary files

Article information

Article type
Paper
Submitted
20 ⵏⵓⵡ 2013
Accepted
17 ⵉⵏⵏ 2014
First published
20 ⵉⵏⵏ 2014

RSC Adv., 2014,4, 8597-8604

Insight into the dynamic ligand exchange process involved in bipyridyl linked arene ruthenium metalla-rectangles

A. Garci, S. Marti, S. Schürch and B. Therrien, RSC Adv., 2014, 4, 8597 DOI: 10.1039/C3RA46859C

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