A Family of Dinuclear Iron(II) SCO Compounds Based on a 1, 3, 4‐Thiadiazole Bridging Ligand1. Issue 22 (12th June 2015)

• Record Type: Journal Article
• Authors: Herold, Christian F.; Carrella, Luca M.; Rentschler, Eva
• Is Part Of: European journal of inorganic chemistry. Issue 22(2015)
• Page Start: 3632
• Page End: 3636
• Publication Date: 2015-06-12
• Subjects: Spin crossover -- Iron -- 1, 3, 4‐­Thiadiazoles -- Bridging ligands -- Magnetic properties; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201500483
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: A new family of dinuclear iron(II) spin‐crossover (SCO) compounds with the formula [Fe2 (μ‐L)2 ]X4, with three different counteranions [X = BF4 – (1 ), ClO4 – (2 ) and F3 CSO3 – (3 )], was prepared and characterized by single‐crystal X‐ray diffraction, variable‐temperature magnetic susceptibility and Mössbauer measurements. These are the first dinuclear iron(II) SCO complexes with a 1, 3, 4‐thiadiazole bridging ligand L {with L = 2, 5‐bis[(2‐pyridylmethyl)amino]methyl‐1, 3, 4‐thiadiazole}. The magnetic measurements reveal a gradual and incomplete SCO of the three compounds around room temperature, starting from a diamagnetic [LS–LS] state. The diamagnetic ground state is in agreement with the single‐crystal X‐ray diffraction and Mössbauer data. Abstract : Herein we present a new 1, 3, 4‐thiadiazole bridging ligand and three spin‐crossover active dinuclear iron(II) compounds. The complexes show promising magnetic properties with a diamagnetic [LS–LS] ground state at low temperatures and represent a great starting point to explore this new family of dinuclear SCO compounds.