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Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems\nand Chiroptical Redox Switches.
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SYSNO ASEP 0544194 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems
and Chiroptical Redox Switches.Author(s) Kos, Martin (UCHP-M) RID, ORCID, SAI
Rodriques, R. (FR)
Storch, Jan (UCHP-M) RID, ORCID, SAI
Sýkora, Jan (UCHP-M) RID, ORCID, SAI
Caytan, E. (FR)
Cordier, M. (FR)
Císařová, I. (CZ)
Vanthuyne, N. (FR)
Williams, J.A.G. (GB)
Žádný, Jaroslav (UCHP-M) RID, SAI, ORCID
Církva, Vladimír (UCHP-M) RID, ORCID, SAI
Crassous, J. (FR)Source Title Inorganic Chemistry. - : American Chemical Society - ISSN 0020-1669
Roč. 60, č. 16 (2021), s. 11838-11851Number of pages 14 s. Language eng - English Country US - United States Keywords ligands ; scaffolds ; X ray crystallography Subject RIV CC - Organic Chemistry OECD category Organic chemistry R&D Projects GA20-19353S GA ČR - Czech Science Foundation (CSF) EF18_053/0016920 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access with time embargo (17.08.2022) Institutional support UCHP-M - RVO:67985858 UT WOS 000687044700018 EID SCOPUS 85112385571 DOI 10.1021/acs.inorgchem.1c01379 Annotation The synthesis and photophysical and chiroptical properties of novel aza[n]helicenes (6a–d, 10a,b, n = 4–7) substituted with one or two 2-pyridyl groups are described. The preparation was performed via an adapted Mallory reaction using aromatic imines as precursors. The obtained novel class of helical 2,2′-bipyridine ligands was then coordinated to Ru(bipy)22+ units, thus affording the first diastereomerically and enantiomerically pure [RuL(bipy)2]2+ (11a,c, L = 6a,c) or [Ru2L′(bipy)4]4+ (12, L′ = 10b) complexes. The topology and stereochemistry of these novel metal-based helical architectures were studied in detail, notably using X-ray crystallography. Interestingly, the coordination to ruthenium(II) enabled the preparation of fused multihelical systems incorporating aza- and ruthena-helicenes within the same scaffold. The photophysical, chiroptical, and redox properties of these complexes were examined in detail, and efficient redox-triggered chiroptical switching activity was evidenced. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0321679
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