Supramolecular Modulation of Spin Crossover in an Fe(II) Dinuclear Triple Helicate

Alexander R Craze; Hikaru Zenno; Michael C Pfrunder; John C McMurtrie; Shinya Hayami; Jack K Clegg; Feng Li

doi:10.1021/acs.inorgchem.1c00553

Supramolecular Modulation of Spin Crossover in an Fe(II) Dinuclear Triple Helicate

Inorg Chem. 2021 May 3;60(9):6731-6738. doi: 10.1021/acs.inorgchem.1c00553. Epub 2021 Apr 13.

Authors

Alexander R Craze¹, Hikaru Zenno², Michael C Pfrunder^{3

4

5}, John C McMurtrie^{4

5}, Shinya Hayami², Jack K Clegg³, Feng Li¹

Affiliations

¹ School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
² Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, Japan.
³ School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia.
⁴ School of Chemistry and Physics, Queensland University of Technology, 2 George Street, Brisbane, QLD 4001, Australia.
⁵ Centre for Materials Science, Queensland University of Technology, 2 George St, Brisbane, QLD 4001, Australia.

PMID: 33847127
DOI: 10.1021/acs.inorgchem.1c00553

Abstract

A spin-crossover (SCO) active dinuclear Fe(II) triple helicate of the form [Fe₂L₃]⁴⁺ was combined with additional supramolecular components in order to manipulate the interhelical separation and steric congestion and to study the magneto-structural effects on the ensuing composite materials. A more separated array of SCO units produced more extensive spin-transitions, while a tightly arranged lattice environment stabilized the low-spin state. This study highlights the important interplay between crystal packing, intermolecualr interactions, and the magentic behavior of SCO materials.