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Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties

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Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties

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FINK, Daniel, Michael LINSEIS, Rainer F. WINTER, 2018. Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties. In: Organometallics. 37(12), pp. 1817-1820. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/acs.organomet.8b00057

@article{Fink2018-06-25Const-42691, title={Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties}, year={2018}, doi={10.1021/acs.organomet.8b00057}, number={12}, volume={37}, issn={0276-7333}, journal={Organometallics}, pages={1817--1820}, author={Fink, Daniel and Linseis, Michael and Winter, Rainer F.} }

eng Fink, Daniel Linseis, Michael 2018-06-25 2018-06-26T08:31:00Z 2018-06-26T08:31:00Z Fink, Daniel Two constitutionally isomeric tetraruthenium macrocycles were constructed from either symmetrically (2-S) or unsymmetrically (2-A) functionalized thiophene-based building blocks. Both compounds were fully characterized by NMR spectroscopy and high-resolution ESI MS. Despite their identical composition and close structural resemblance, the two isomers exhibit vastly different electrochemical and spectroscopic properties as a consequence of the different extensions of their π-conjugated subunits. In particular, mixed-valent 2-A<sup>+/2+/3+</sup> absorb weakly in the near infrared as a consequence of electronic through-bond coupling between neighboring oxidized and reduced sites, whereas 2-S<sup>+/2+/3+</sup> do not. Winter, Rainer F. Winter, Rainer F. Linseis, Michael Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties

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