Supramolecular spin-crossover iron complexes based on imidazole-imidazolate hydrogen bonds

Inorganic Chemistry
Yukinari SunatsukiJean-Pierre Tuchagues

Abstract

The [Fe(II)(H(3)L)](BF(4))(2).3H(2)O (1) complex was synthesized, where H(3)L (tris[[2-[(imidazole-4-yl)methylidene]amino]ethyl]amine) is a tripodal ligand obtained by condensation of tris(2-aminoethyl)amine and 4-formylimidazole (fim) in a 1:3 molar ratio. Starting from 1, a series of complexes, [Fe(II)(H(1.5)L)](BF(4))(0.5) (2) (=[Fe(II)(H(3)L)][Fe(II)(L)]BF(4)), [Fe(H(1.5)L)]BF(4) (3) (=[Fe(II)(H(3)L)][Fe(III)(L)](BF(4))(2)), [Fe(III)(H(3)L)](BF(4))(3).fim.H(2)O (4), and [Fe(III)(L)].2.5H(2)O (5), has been synthesized and characterized. The single-crystal X-ray structure of each complex has been determined. The Fe(II) compound, 2, and a mixed valence Fe(II)-Fe(III) compound, 3, involve formally hemi-deprotonated ligands, H(1.5)L. The structure of 3 consists of a homochiral two-dimensional assembled sheet, arising from the intermolecular hydrogen bonds between [Fe(II)(H(3)L)](2+) and [Fe(III)(L)](0) (3). All but 5 exhibit spin crossover between low-spin (LS) and high-spin (HS) states. This is a rare case where both Fe(II) and Fe(III) complexes containing the same ligand exhibit spin-crossover behavior. Magnetic susceptibility and Mössbauer studies showed that 3 has three accessible electronic states: LS Fe(II)-LS Fe(III), HS ...Continue Reading

References

Sep 1, 1976·Journal of the American Chemical Society·G KolksS J Lippard
Jan 3, 1996·Inorganic Chemistry·Azzedine BousseksouFrançois Varret
Nov 22, 2001·Journal of the American Chemical Society·S HayamiO Sato
Dec 20, 2002·Nature·Masahiro IrieTsuyoshi Kawai
Apr 17, 2003·Angewandte Chemie·Yukinari SunatsukiJean-Pierre Tuchagues
Mar 30, 2004·Inorganic Chemistry·Cynthia BrewerW Robert Scheidt

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Citations

Feb 8, 2013·Inorganic Chemistry·Cyril CookMuralee Murugesu
Jun 8, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Wang-Kang HanZhi-Guo Gu
Mar 10, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Wang-Kang HanZhi-Guo Gu
Jan 18, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Greg BrewerPeter Y Zavalij
Sep 26, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Hanane Z LazarMalcolm A Halcrow
Jan 13, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Sara A DienerMalcolm A Halcrow
Oct 30, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Antoine TissotMarie-Laure Boillot
Nov 7, 2019·Chemical Communications : Chem Comm·Wasinee PhonsriKeith S Murray
Jan 5, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Musa S ShongweMasahiro Mikuriya
Feb 23, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Rajat SahaGolam Mostafa
Apr 13, 2011·Chemical Society Reviews·Malcolm A Halcrow
Apr 8, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Thomas D RobertsMalcolm A Halcrow
Jan 20, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Chihiro Kachi-TerajimaMiki Hasegawa
Jan 8, 2014·Inorganic Chemistry·Florian ReichelFeng Li
Sep 21, 2010·Inorganic Chemistry·Eva GómezAmador Menéndez-Velázquez
Oct 29, 2014·Inorganic Chemistry·Alexandre AbhervéMartin Verneret
Sep 15, 2020·ACS Omega·Carlos CruzVerónica Paredes-García
Apr 4, 2007·Journal of the American Chemical Society·Elizabeth A MaderJames M Mayer

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