Structure and Magnetic Properties of Pseudo-1D Chromium Thiolate Coordination Polymers
| Autor: | Andrew Ritchhart, Alexander S. Filatov, Ie-Rang Jeon, John S. Anderson |
|---|---|
| Přispěvatelé: | University of Chicago, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), This research was supported by the U.S. National Science Foundation (DMR-2002367), by a FACCTS grant through the France Chicago Center. J.S.A. gratefully acknowledges support from a Dreyfus Teacher-Scholar award (TC-21-064). This work made use of the shared facilities at the University of Chicago Materials Research Science and Engineering Center, supported by the National Science Foundation under award number DMR-2011854. MRCAT operations are supported by the Department of Energy and the MRCAT member institutions. |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Inorganic Chemistry Inorganic Chemistry, 2023, 62 (6), pp.2817-2825. ⟨10.1021/acs.inorgchem.2c03991⟩ |
| ISSN: | 0020-1669 1520-510X |
| DOI: | 10.1021/acs.inorgchem.2c03991⟩ |
| Popis: | International audience; The synthesis, structure, and magnetic properties of two novel, pseudo-one-dimensional (1D) chromium thiolate coordination polymers (CPs), CrBTT and Cr(2)BDT(3), are reported. The structures of these materials were determined using X-ray powder diffraction revealing highly symmetric 1D chains embedded within a CP framework. The magnetic coupling of this chain system was measured by SQUID magnetometry, revealing a switch from antiferromagnetic to ferromagnetic behavior dictated by the angular geometrical constraints within the CP scaffold consistent with the Goodenough-Kanamori-Anderson rules. Intrachain magnetic coupling constants J(NN) of -32.0 and +5.7 K were found for CrBTT and Cr(2)BDT(3), respectively, using the 1D Bonner-Fisher model of magnetism. The band structure of these materials has also been examined by optical spectroscopy and density functional theory calculations revealing semiconducting behavior. Our findings here demonstrate how CP scaffolds can support idealized low-dimensional structural motifs and dictate magnetic interactions through tuning of geometry and inter-spin couplings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|