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Issue 7, 2016
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Carbon-rich cyclopentadienyl ruthenium allenylidene complexes

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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

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Publication details

The article was received on 14 Dec 2015, accepted on 05 May 2016 and first published on 06 May 2016


Article type: Paper
DOI: 10.1039/C5NJ03556B
New J. Chem., 2016,40, 6127-6134
  • Open access: Creative Commons BY license
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    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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