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Updated: Jun 26, 2025
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Spin crossover of a Fe(II) mononuclear complex induced by intermolecular factors involving chloride and solvent
Kenneth Zhang1, Matthew J Wallis1, Alexander R Craze2
1School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW, Australia. Feng.Li@westernsydney.edu.au.
Abstract:
Two new salts of a mononuclear tripodal Fe(II) complex were prepared, using ClO4- and Cl-. The ClO4- sample (1) remained HS at low temperatures, similar to the previously reported BF4- analogue. Crystallising with the Cl- anion (2) led to a markedly different crystal packing arrangement, and engendered SCO activity. This has been correlated to the lower crystal packing density in 2 and the coordination complex conformational differences arising due to the packing motifs of 1 and 2. Further, solvent ordering effects have been proposed to facilitate spin transition behaviour in 2.
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