Spin State Chemistry : Modulation of Ligand pKa by Spin State Switching in a [2×2] Iron(II) Grid-Type Complex

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

13 Scopus Citations
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Author(s)

  • Sébastien Dhers
  • Abhishake Mondal
  • David Aguilà
  • Juan Ramírez
  • Sergi Vela
  • Pierre Dechambenoit
  • Mathieu Rouzières
  • Jonathan R. Nitschke
  • Rodolphe Clérac

Detail(s)

Original languageEnglish
Pages (from-to)8218-8227
Journal / PublicationJournal of the American Chemical Society
Volume140
Issue number26
Online published6 Jun 2018
Publication statusPublished - 5 Jul 2018
Externally publishedYes

Abstract

The iron(II) [2×2] grid complex Fe-8H has been synthesized and characterized. It undergoes spin-crossover (SCO) upon deprotonation of the hydrazine-based terpyridine-like ligand. The deprotonation patterns have been determined by X-ray crystallography and 1H NMR spectroscopy and discussed in relation to the spin state of the iron(II) centers, which influences greatly the pKa of the ligand. The synthesis of the magnetically silent zinc(II) analogue is also reported, and its (de)protonation behavior has been characterized to serve as a reference for the study of the FeII grid complexes. DFT computations have also been performed in order to investigate how the successive deprotonation of the bridging ligands affects the SCO behavior within the grid.

Citation Format(s)

Spin State Chemistry : Modulation of Ligand pKa by Spin State Switching in a [2×2] Iron(II) Grid-Type Complex. / Dhers, Sébastien; Mondal, Abhishake; Aguilà, David; Ramírez, Juan; Vela, Sergi; Dechambenoit, Pierre; Rouzières, Mathieu; Nitschke, Jonathan R.; Clérac, Rodolphe; Lehn, Jean-Marie.

In: Journal of the American Chemical Society, Vol. 140, No. 26, 05.07.2018, p. 8218-8227.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review