Spin-crossover in an iron() complex showing a broad thermal hysteresis

• Published in: Dalton transactions : an international journal of inorganic chemistry Vol. 5; no. 2; pp. 472 - 475
• Main Authors: Rajnák, Cyril, Mi ová, Romana, Monco, Ján, Dlhá, ubor, Krüger, Christoph, Renz, Franz, Bo a, Roman
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 19.01.2021
• Subjects: Crossovers; Crystallography; Hysteresis; Imines; Iron
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d0dt03610b

A pentadentate Schiff-base ligand 3,5 Cl-L 2− and NCSe − form an iron( iii ) mononuclear complex, namely [Fe( 3,5 Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling). Analogous complexes of the [Fe( 3,5 X-L)(Y)] type, where X = Cl or Br and Y = Cl − , N 3 − , NCS − , and NCSe − , are high-spin over the whole temperature interval. A pentadentate Schiff-base ligand 3,5 Cl-L 2− and NCSe − form a iron( iii ) mononuclear complex [Fe( 3,5 Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).