The Honeysuckle and the Bindweed Revisited: Synthesis and Stereochemistry of Extended Helical Structures from Coordination Complexes

Article Article scientifique Article The Honeysuckle and the Bindweed Revisited: Synthesis and Stereochemistry of Extended Helical Structures from Coordination Complexes eng 2023-10-23 2023-10-23 author Downward Alan Murray Department of Inorganic and Analytical Chemistry University of Geneva 30 quai Ernest Ansermet CH-1211 Geneva 4 Switzerland E-mail: Alan 785432 author Granelli Matteo Department of Inorganic and Analytical Chemistry University of Geneva 30 quai Ernest Ansermet CH-1211 Geneva 4 Switzerland E-mail: Alan 754650 author Besnard Céline 0009-0002-2287-4959 Laboratory for X-ray Crystallography University of Geneva 24 quai Ernest Ansermet CH-1211 Geneva 4 Switzerland 682138 Administration de la section de chimie (CHIAD) author Guenee Laure Laboratory for X-ray Crystallography University of Geneva 24 quai Ernest Ansermet CH-1211 Geneva 4 Switzerland 115015 Département de chimie minérale et analytique (CHIAM) author Williams Alan Francis 0000-0002-3779-1593 Department of Inorganic and Analytical Chemistry University of Geneva 30 quai Ernest Ansermet CH-1211 Geneva 4 Switzerland E-mail: Alan 25350 Département de chimie minérale et analytique (CHIAM) 1-12 e202300120 10.1002/hlca.202300120 0018-019X https://onlinelibrary.wiley.com/doi/10.1002/hlca.202300120 We report structural studies of a chiral tridentate ligand which forms helical cubanes with cobalt(II) and manganese(II). A quadruple helicate with (P)‐chirality is obtained using a (S)‐ligand with cobalt(II) but the ligand binds manganese(II) in one of two possible orientations and either (P)‐ or (M)‐quadruple helicates may be observed for a given ligand enantiomer. The helicates may be linked into extended structures by p‐nitrobenzoate capping ligands which show stacking interactions with neighbouring complexes. With cobalt(II) we find an extended helical structure with (M)‐chirality linking helicates which themselves have (P) ‐ chirality. With manganese(II) we observe a remarkable structure with extended (M)‐helices coexisting with extended (P)‐helices. Chirality Cobalt Helical structures Manganese Supramolecular chemistry Dewey 540 Swiss National Science Foundation Coordination chemistry of polynuclear complexes 146214 CH Projects 40 Département de chimie minérale, analytique et appliquée 145 false Helvetica chimica acta 106 11 7d55bf3a-11d5-453e-a81d-5573388c313a Article (Published version) Public Downward_HCA_202300120.pdf 8534116 application/pdf CC BY-NC-SA ac48d2242e8c34a6446f06d3b089f2586093e170430442aa3d444d584dcb8165 openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée

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The Honeysuckle and the Bindweed Revisited: Synthesis and Stereochemistry of Extended Helical Structures from Coordination Complexes	Helvetica chimica acta			2023	71	39

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Downward, Alan Murray