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Alkene analogues of bis(N-donor)ketone ligands: ruthenium(II) complexes containing 1-(pyridin-2-yl)-1-(N-methylimidazol-2-yl)ethene and 1,1-bis(N-methylimidazol-2-yl)ethene ((mim)2C=CH2), and structural studies of [Ru(bpy)2{(mim)2C=CH2}][PF6]2 (bpy = 2,2'-bipyridine) and the pyridine-2-carboxylate (pyC02-) complex [Ru(bpy)2(pyC02)][PF6]

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Canty, AJ and Traill, PR and Skelton, BW and White, AH (1997) Alkene analogues of bis(N-donor)ketone ligands: ruthenium(II) complexes containing 1-(pyridin-2-yl)-1-(N-methylimidazol-2-yl)ethene and 1,1-bis(N-methylimidazol-2-yl)ethene ((mim)2C=CH2), and structural studies of [Ru(bpy)2{(mim)2C=CH2}][PF6]2 (bpy = 2,2'-bipyridine) and the pyridine-2-carboxylate (pyC02-) complex [Ru(bpy)2(pyC02)][PF6]. Inorganica Chimica Acta, 255 (1). pp. 117-123. ISSN 0020-1693

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Abstract

The complexes [Ru(bpy)2(N~N)][PF6]2 have been synthesized from reactions of cis-[RuCl2(bpy)2].2H20 (bpy = 2, 2'-bipyridine) and the bidentate ligands N~N((mim)2C=CH2 and (py)(mim)C=CH2 where py = pyridin-2-yl and mim = N-methylimidazol-2-yl) in aqueous ethanol; with the analogue (py)(mim)C=O, the pyridine-2-carboxylate complex [Ru(bpy)2(pyC02)][PF6] is formed. The complexes [Ru(bpy)2{(mim)2C=CH2}][PF6] (1) and [Ru(bpy)2(pyCO2)][PF6] (3) characterized by room-temperature single crystal X-ray studies, were shown to have distorted octahedral geometry for ruthenium(II). The (mim)2C=CH2 ligand is non-planar. with the mim mean planes forming a dihedral angle of 32.2(1) and forming dihedral angles of 56.5(1) and 60.4(1)° with the 'C=CC2' mean plane, in contrast to the near planarity reported for the ketone analogue (mim)2C=O in other metal complexes.

Item Type: Article
Journal or Publication Title: Inorganica Chimica Acta
Page Range: pp. 117-123
ISSN: 0020-1693
Identification Number - DOI: 10.1016/S0020-1693(96)05357-1
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 04 Feb 2008 22:21
Last Modified: 18 Nov 2014 03:27
URI: http://eprints.utas.edu.au/id/eprint/2959
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