caa a22 4500 469038713 CHVBK 20180323132803.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00816847 doi (NATIONALLICENCE)springer-10.1007/BF00816847 Spin-crossover complexes in solution, I. Substitutional lability of [Fe( bzimpy )2](ClO4)2 [Elektronische Daten] [Bernhard Strauß, Wolfgang Linert, Viktor Gutmann, Reginald Jameson] Spin-crossover-Komplexe in Lösung, 1. Mitt.: Substitutionslabilität von [Fe( bzimpy )2](ClO4)2 Summary: The iron(II) complexes of the nitrogen donor ligand 2,6-bis(benzimidazol-2′-yl)pyridine (bzimpy) have been investigated in nonaqueous solvents using various spectrophotometric methods. Measurements in methanol at 20°C revealed thatbzimpy can act as a bi-or tridendate ligand towards iron(II) in this solvent, forming [Fe(bzimpy)]2+ (tridendate, logK=5.54), [Fe(bzimpy)2]2+ (bistridentate, logK=4.12) and [Fe(bzimpy)3]2+ (tris-bidentate, logK=3.85). The pronounced thermochromism of the compound is shown to be the result of both spin-crossover and dissociation equilibria. Furthermore, in solvents of higher donor numbers (≥30), partial or complete deprotonation of the complex [Fe(bzimpy)3]2+ is observed. Triethylamine added stepwise to methanolic solutions causes successive deprotonation. Springer-Verlag, 1992 2,6-Bis(benzimidazol-2′-yl)pyridine nationallicence Complex formation nationallicence Deprotonation nationallicence Spin-crossover nationallicence Substitutional lability nationallicence Thermochromism nationallicence Strauß Bernhard Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut Linert Wolfgang Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut Gutmann Viktor Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut Jameson Reginald Department of Chemistry, The University, DD1 4HN, Dundee, Scotland, UK aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 123/6-7(1992-06-01), 537-546 0026-9247 123:6-7<537 1992 123 706 https://doi.org/10.1007/BF00816847 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00816847 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Strauß Bernhard Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut NATIONALLICENCE 700 1- Linert Wolfgang Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut NATIONALLICENCE 700 1- Gutmann Viktor Institute of Inorganic Chemistry, Technical University of Vienna, A-1060, Vienna, Austria aut NATIONALLICENCE 700 1- Jameson Reginald Department of Chemistry, The University, DD1 4HN, Dundee, Scotland, UK aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 123/6-7(1992-06-01), 537-546 0026-9247 123:6-7<537 1992 123 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer