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http://hdl.handle.net/2445/153981
Title: | Homoleptic versus heteroleptic formation of mononuclear Fe(II) complexes with tris-imine ligands |
Author: | Barrios Moreno, Leoní Alejandra Bartual-Murgui, Carlos Peyrecave-Lleixà, Eugènia Le Guennic, Boris Teat, Simon J. Roubeau, Olivier Aromí Bedmar, Guillem |
Keywords: | Cetones Lligands Estructura cristal·lina (Sòlids) Ketones Ligands Layer structure (Solids) |
Issue Date: | 14-Apr-2016 |
Publisher: | American Chemical Society |
Abstract: | We show a marked tendency of Fe(II) to form heteroleptic [Fe(L)(L′)](ClO4)2 complexes from pairs of chelating tris-imine 3bpp, tpy, or 2bbp ligands. New synthetic avenues for spin crossover research become thus available, here illustrated with three new heteroleptic compounds with differing magnetic behaviors: [Fe(H4L1)(Cl-tpy)](ClO4)2·C3H6O (1), [Fe(H2L3)- (Me3bpp)](ClO4)2·C3H6O (2), [Fe(H4L1)(2bbp)](ClO4)2· 3C3H6O (3). Structural studies demonstrate that 1 is in the lowspin (LS) state up to 350 K, while complexes 2 and 3 are, by contrast, in the high-spin (HS) state down to 2 K, as corroborated through magnetic susceptibility measurements. Upon exposure to the atmosphere, the latter exhibits the release of three molecules of acetone per complex, turning into the solvent-free analogue [Fe(H4L1)(2bbp)](ClO4)2 (3a), through a singlecrystal- to-single-crystal transformation. This guest extrusion process is accompanied by a spin switch, from HS to LS. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1021/acs.inorgchem.5b02058 |
It is part of: | Inorganic Chemistry, 2016, vol. 55, p. 4110-4116 |
URI: | http://hdl.handle.net/2445/153981 |
Related resource: | https://doi.org/10.1021/acs.inorgchem.5b02058 |
ISSN: | 0020-1669 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
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