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Updated: Sep 4, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Synthesis and crystal structure of [(S )-(2-phenyl-ferrocen-yl)meth-yl]tri-methyl-ammonium iodide di-chloro-methane
Abdelhak Lachguar1,2, Eric Deydier1,2, Agnès Labande1
1CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, F-31077 Toulouse Cedex 4, France.
Abstract:
As a follow-up to our research on the chemistry of disubstituted ferrocene derivatives, the synthesis and the structure of the title compound, [Fe(C5H5)(C15H19N)]I·CH2Cl2, is described. The cation mol-ecule is built up from a ferrocene disubstituted by a tri-methyl-ammonium methyl group and a phenyl ring. The asymmetric unit contains the iodide to equilibrate the charge and a disordered di-chloro-methane solvate. The disordered model results from a roughly statistical exchange (0.6/0.4) between one Cl and one H. The packing of the structure is stabilized by weak C-H⋯X (X = I, Cl), C-H⋯π(Cp) and C-Cl⋯π(phen-yl) inter-actions, building a three-dimensional network. The cation has planar chirality with S (Fc) absolute configuration. The structure of the title compound is compared with related disubstituted (tri-meth-ylammonio)-methyl ferrocenes.
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