Bifunctional Fe(ii) spin crossover-complexes based on ω-(1H-tetrazol-1-yl) carboxylic acids

Autor:	Michael Reissner, Danny Müller, Jan M. Welch, Willi Zeni, Marco Seifried, Gerald Giester, Berthold Stöger, Werner Artner, Peter Weinberger, Christian Knoll
Rok vydání:	2020
Předmět:	Inorganic Chemistry chemistry.chemical_classification chemistry.chemical_compound chemistry Spin crossover Ligand Carboxylic acid Polymer chemistry Supramolecular chemistry Cooperativity Polymer Bifunctional Electron spectroscopy
Zdroj:	Dalton Transactions. 49:17183-17193
ISSN:	1477-9234 1477-9226
DOI:	10.1039/d0dt03315d
Popis:	To increase the supramolecular cooperativity in Fe(II) spin crossover materials based on N1-substituted tetrazoles, a series of ω-(1H-tetrazol-1-yl) carboxylic acids with chain-lengths of C2–C4 were synthesized. Structural characterization confirmed the formation of a strong hydrogen-bond network, responsible for enhanced cooperativity in the materials and thus largely complete spin-state transitions for the ligands with chain lenghts of C2 and C4. To complement the structural and magnetic investigation, electronic spectroscopy was used to investigate the spin-state transition. An initial attempt to utilize the bifunctional coordination ability of the ω-(1H-tetrazol-1-yl) carboxylic acids for preparation of mixed-metallic 3d–4f coordination polymers resulted in a novel one-dimensional gadolinium-oxo chain system with the ω-(1H-tetrazol-1-yl) carboxylic acid acting as μ2-η2:η1 chelating–bridging ligand.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::654364eddf97b2c10b8784fbae0b317d https://doi.org/10.1039/d0dt03315d Zobrazit plný text záznamu