Metal‐Induced Thiophene Ring Opening and CC Bond Formation To Produce Unique Hexa‐1,3,5‐trienediyl‐Coupled Non‐Innocent Ligand Chelates |
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| Authors: | Dr Fabian Ehret Dr Martina Bubrin Dr Stanislav Záliš Dr José Luis Priego Prof Dr Reyes Jiménez‐Aparicio Prof Dr Wolfgang Kaim |
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| Affiliation: | 1. Institut für Anorganische Chemie, Universit?t Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart (Germany);2. J. Heyrovsky Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolej?kova 3, 18223 Prague (Czech Republic);3. Facultad de Ciencias Químicas, Universidad, Complutense de Madrid, 28040 Madrid (Spain) |
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| Abstract: | Ring opening of thiophenes containing an azo function in 2‐position and subsequent dimerization through C?C coupling were observed on reaction with Ru(acac)2(CH3CN)2] (acac=acetylacetonate) to produce two 1,3,5‐hexatriene‐linked redox‐active azothiocarbonyl chelate systems. Interaction of the non‐innocent chelate ligands and of the metals at a nanoscale distance of 1.45 nm via the conjugated hexatriene bridge was studied by magnetic and electron spectroscopic measurements in conjunction with DFT calculations, revealing four‐center magnetic interactions of this unique setting and weak intervalence coupling after reduction. |
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| Keywords: | mixed valence non‐innocent ligand ruthenium spin coupling thiophene |
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