Issue 7, 2016

Carbon-rich cyclopentadienyl ruthenium allenylidene complexes

Abstract

Ruthenium allenylidene complexes with carbon-rich polyaromatic moieties have been synthesized by using [RuCl(η5-C5H5)(PPh3)2] (η5-C5H5 = cyclopentadienyl) as a precursor and the propargyl alcohols 10-ethynyl-10-hydroxyanthracen-9-one (ACO), 13-ethynyl-13-hydroxypentacen-6-one (PCO), 1-phenyl-1-(pyren-1-yl)prop-2-yn-1-ol (PyrPh), 9-ethynyl-9H-fluoren-9-ol (FN) and 6-ethynyl-6H-benzo[cd]pyren-6-ol (BPyr) as ligands. The resulting cationic allenylidene complexes, [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash](AO))(PPh3)2]PF6 (1), [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash](PCO))(PPh3)2]PF6 (2), [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash](PyrPh))(PPh3)2]PF6 (3), [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash](FN))(PPh3)2]PF6 (4), and [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash](BPyr))(PPh3)2]PF6 (5) show interesting intermolecular π-interactions in the solid-state structure as well as solution state complexation with pyrene (documented by Job's plots experiments). CV data indicate possible Ru(II)/Ru(III) oxidation, as well as the potential reduction of the carbon-rich allenylidene moiety.

Graphical abstract: Carbon-rich cyclopentadienyl ruthenium allenylidene complexes

Supplementary files

Article information

Article type
Paper
Submitted
14 Dec 2015
Accepted
05 May 2016
First published
06 May 2016
This article is Open Access
Creative Commons BY license

New J. Chem., 2016,40, 6127-6134

Carbon-rich cyclopentadienyl ruthenium allenylidene complexes

S. Spörler, F. Strinitz, P. Rodehutskors, L. Müller, A. R. Waterloo, M. Dürr, E. Hübner, I. Ivanović-Burmazović, R. R. Tykwinski and N. Burzlaff, New J. Chem., 2016, 40, 6127 DOI: 10.1039/C5NJ03556B

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