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Structure and properties of dinuclear [Ru-II([n]aneS(4))] complexes of 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine

Newell, M, Ingram, J. D., Easun, Timothy, Vickers, S. J., Adams, H, Ward, M. D. and Thomas, J. A. 2006. Structure and properties of dinuclear [Ru-II([n]aneS(4))] complexes of 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine. Inorganic Chemistry 45 (2) , pp. 821-827. 10.1021/ic051151b

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Abstract

The synthesis of dinuclear [Ru(II)([n]aneS(4))] (where n = 12, 14) complexes of the bridging ligand 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine are reported. The X-ray structures of both of the new complexes are compared to a newly obtained structure for a dinuclear [Ru(II)([9]aneS(3))]-based analogue, whose synthesis has previously been reported. A comparison of the electrochemistry of the three complexes reveals that the first oxidation of the [Ru(II)([n]aneS(4))]-based systems is a ligand-based couple, indicating that the formation of the radical anion form of the bridging ligand is stabilized by metal center coordination. Spectroelectrochemistry studies on the mixed-valence form of the new complexes suggest that they are Robin and Day Class II systems. The electrochemical and electronic properties of these complexes is rationalized by a consideration of the pi-bonding properties of thiacrown ligands.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: American Chemical Society
ISSN: 0020-1669
Last Modified: 04 Jun 2017 07:58
URI: http://orca.cf.ac.uk/id/eprint/71029

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