The role of coulomb interactions for spin crossover behaviors and crystal structural transformation in novel anionic fe(III) complexes from a π-extended ono ligand

Suguru Murata, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Yoshihito Shiota, Kazunari Yoshizawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

To investigate the π-extension effect on an unusual negative-charged spin crossover (SCO) FeIII complex with a weak N2O4 first coordination sphere, we designed and synthesized a series of anionic FeIII complexes from a π-extended naphthalene derivative ligand. Acetonitrile-solvate tetramethylammonium (TMA) salt 1 exhibited an SCO conversion, while acetone-solvate TMA salt 2 was in a high-spin state. The crystal structural analysis for 2 revealed that two-leg ladder-like cation-anion arrays derived from π-stacking interactions between π-ligands of the FeIII complex anion and Coulomb interactions were found and the solvated acetone molecules were in one-dimensional channels between the cation-anion arrays. A desolvation-induced single-crystal-to-single-crystal transformation to desolvate compound 2’ may be driven by Coulomb energy gain. Furthermore, the structural comparison between quasi-polymorphic compounds 1 and 2 revealed that the synergy between Coulomb and π-stacking interactions induces a significant distortion of coordination structure of 2.

Original languageEnglish
Article number49
JournalCrystals
Volume6
Issue number5
DOIs
Publication statusPublished - May 1 2016

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Coulomb interactions
Anions
crossovers
Negative ions
Ligands
Acetone
anions
acetone
Crystals
ligands
Cations
Salts
Positive ions
Single crystals
salts
crystals
cations
single crystals
Ladders
interactions

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

Cite this

The role of coulomb interactions for spin crossover behaviors and crystal structural transformation in novel anionic fe(III) complexes from a π-extended ono ligand. / Murata, Suguru; Takahashi, Kazuyuki; Sakurai, Takahiro; Ohta, Hitoshi; Yamamoto, Takashi; Einaga, Yasuaki; Shiota, Yoshihito; Yoshizawa, Kazunari.

In: Crystals, Vol. 6, No. 5, 49, 01.05.2016.

Research output: Contribution to journalArticle

Murata, Suguru ; Takahashi, Kazuyuki ; Sakurai, Takahiro ; Ohta, Hitoshi ; Yamamoto, Takashi ; Einaga, Yasuaki ; Shiota, Yoshihito ; Yoshizawa, Kazunari. / The role of coulomb interactions for spin crossover behaviors and crystal structural transformation in novel anionic fe(III) complexes from a π-extended ono ligand. In: Crystals. 2016 ; Vol. 6, No. 5.
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AU - Ohta, Hitoshi

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