Phase Trapping in Multistep Spin Crossover Compound
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Fabian Fuermeyer
- Luca M Carrella
- Vadim Ksenofontov
- Angela Moeller
- Eva Rentschler
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000518088800027&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1021/acs.inorgchem.9b03170
- eISSN
- 1520-510X
- Externe Identifier
- Clarivate Analytics Document Solution ID: KS1SB
- PubMed Identifier: 32043871
- ISSN
- 0020-1669
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- INORGANIC CHEMISTRY
- Paginierung
- 2843 - 2852
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Titel
- Phase Trapping in Multistep Spin Crossover Compound
- Sub types
- Article
- Ausgabe der Zeitschrift
- 59
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Autoren
- Fabian Fürmeyer
- Luca M Carrella
- Vadim Ksenofontov
- Angela Möller
- Eva Rentschler
- DOI
- 10.1021/acs.inorgchem.9b03170
- eISSN
- 1520-510X
- ISSN
- 0020-1669
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Inorganic Chemistry
- Sprache
- en
- Online publication date
- 2020
- Paginierung
- 2843 - 2852
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Herausgeber
- American Chemical Society (ACS)
- Herausgeber URL
- http://dx.doi.org/10.1021/acs.inorgchem.9b03170
- Datum der Datenerfassung
- 2023
- Titel
- Phase Trapping in Multistep Spin Crossover Compound
- Ausgabe der Zeitschrift
- 59
Datenquelle: Crossref
- Abstract
- The dimeric motif is the smallest unit for two interacting spin centers allowing for systematic investigations of cooperative interactions. As spin transition compounds, dinuclear complexes are of particular interest, since they potentially reveal a two-step spin crossover (SCO), switching between the high spin-high spin [HS-HS], the high spin-low spin [HS-LS], and the low spin-low spin [LS-LS] states. Herein, we report the synthesis and characterization of six dinuclear iron(II) complexes [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>1</b></sup>)<sub>2</sub>](BF<sub>4</sub>)<sub>4</sub> (<b>C1</b>), [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>1</b></sup>)<sub>2</sub>](ClO<sub>4</sub>)<sub>4</sub> (<b>C2</b>), [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>1</b></sup>)<sub>2</sub>](F<sub>3</sub>CSO<sub>3</sub>)<sub>4</sub> (<b>C3</b>), [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>2</b></sup>)<sub>2</sub>](BF<sub>4</sub>)<sub>4</sub> (<b>C4</b>), [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>2</b></sup>)<sub>2</sub>](BF<sub>4</sub>)<sub>4</sub> (<b>C5</b>), and [Fe<sup>II</sup><sub>2</sub>(μ<sub>2</sub>-<b>L</b><sup><b>2</b></sup>)<sub>2</sub>](BF<sub>4</sub>)<sub>4</sub> (<b>C6</b>), based on the 1,3,4-thiadiazole bridging motif. The two novel bis-tridentate ligands (<b>L</b><sup><b>1</b></sup> = 2,5-bis{[(1H-imidazol-2-ylmethyl)-amino]-methyl}-1,3,4-thiadiazole and <b>L</b><sup><b>2</b></sup> = 2,5-bis{[(thiazol-2-ylmethyl)-amino]-methyl}-1,3,4-thiadiazole) were employed in the presence of iron(II) salts with the different counterions. Upon varying ligands and counterions, we were able to change the magnetic properties of the complexes from a temperature-independent [HS-HS] spin state over a one-step spin transition toward a two-step SCO. When cooled slowly from room temperature, the two-step SCO goes along with two distinct phase transitions, and in the intermediate mixed [HS-LS] state distinct HS/LS pairs can be identified unambiguously. In contrast, rapid cooling precludes a crystallographically observable phase transition. For the mixed [HS-LS] state Mössbauer spectroscopy confirms a statistical (random) orientation of adjacent [HS-LS]·[HS-LS]·[HS-LS] chains.
- Addresses
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, Mainz 55128, Germany.
- Autoren
- Fabian Fürmeyer
- Luca M Carrella
- Vadim Ksenofontov
- Angela Möller
- Eva Rentschler
- DOI
- 10.1021/acs.inorgchem.9b03170
- eISSN
- 1520-510X
- Externe Identifier
- PubMed Identifier: 32043871
- Funding acknowledgements
- Carl-Zeiss-Stiftung:
- Open access
- false
- ISSN
- 0020-1669
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Inorganic chemistry
- Sprache
- eng
- Medium
- Print-Electronic
- Online publication date
- 2020
- Paginierung
- 2843 - 2852
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Datum der Datenerfassung
- 2020
- Titel
- Phase Trapping in Multistep Spin Crossover Compound.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 59
Datenquelle: Europe PubMed Central
- Abstract
- The dimeric motif is the smallest unit for two interacting spin centers allowing for systematic investigations of cooperative interactions. As spin transition compounds, dinuclear complexes are of particular interest, since they potentially reveal a two-step spin crossover (SCO), switching between the high spin-high spin [HS-HS], the high spin-low spin [HS-LS], and the low spin-low spin [LS-LS] states. Herein, we report the synthesis and characterization of six dinuclear iron(II) complexes [FeII2(μ2-L1)2](BF4)4 (C1), [FeII2(μ2-L1)2](ClO4)4 (C2), [FeII2(μ2-L1)2](F3CSO3)4 (C3), [FeII2(μ2-L2)2](BF4)4 (C4), [FeII2(μ2-L2)2](BF4)4 (C5), and [FeII2(μ2-L2)2](BF4)4 (C6), based on the 1,3,4-thiadiazole bridging motif. The two novel bis-tridentate ligands (L1 = 2,5-bis{[(1H-imidazol-2-ylmethyl)-amino]-methyl}-1,3,4-thiadiazole and L2 = 2,5-bis{[(thiazol-2-ylmethyl)-amino]-methyl}-1,3,4-thiadiazole) were employed in the presence of iron(II) salts with the different counterions. Upon varying ligands and counterions, we were able to change the magnetic properties of the complexes from a temperature-independent [HS-HS] spin state over a one-step spin transition toward a two-step SCO. When cooled slowly from room temperature, the two-step SCO goes along with two distinct phase transitions, and in the intermediate mixed [HS-LS] state distinct HS/LS pairs can be identified unambiguously. In contrast, rapid cooling precludes a crystallographically observable phase transition. For the mixed [HS-LS] state Mössbauer spectroscopy confirms a statistical (random) orientation of adjacent [HS-LS]·[HS-LS]·[HS-LS] chains.
- Autoren
- Fabian Fürmeyer
- Luca M Carrella
- Vadim Ksenofontov
- Angela Möller
- Eva Rentschler
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/32043871
- DOI
- 10.1021/acs.inorgchem.9b03170
- eISSN
- 1520-510X
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Inorg Chem
- Sprache
- eng
- Country
- United States
- Paginierung
- 2843 - 2852
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Titel
- Phase Trapping in Multistep Spin Crossover Compound.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 59
Datenquelle: PubMed
- Beziehungen:
- Eigentum von