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06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Anionic halide···alcohol clusters in the solid state.
Pavel V Gushchin1, Maxim L Kuznetsov, Matti Haukka
1Institute of Chemistry, Saint Petersburg State University , 198504 Stary Petergof, Russian Federation.
The Journal of Physical Chemistry. A
|September 6, 2014
Summary
Cationic platinum complexes form layered structures through halide ion interactions. Alcohol molecules fill spaces and form halide-alcohol clusters, with hydrogen bonding analyzed via DFT methods.
Area of Science:
- Coordination Chemistry
- Crystallography
- Computational Chemistry
Background:
- Cationic platinum(II) complexes with 1,3,5-triazapentadiene ligands were synthesized.
- These complexes were crystallized from alcohol-containing systems to form solvates.
Purpose of the Study:
- To investigate the crystal structures of novel cationic platinum(II) complexes.
- To analyze the interactions between halide ions, platinum complexes, and alcohol solvates.
- To study the hydrogen bonding properties using theoretical methods.
Main Methods:
- X-ray diffraction was used to determine the crystal structures.
- Analysis of intermolecular interactions, including halide-cation contacts and hydrogen bonding.
- Density Functional Theory (DFT) methods were employed to study hydrogen bond properties.
Main Results:
- The crystal structures revealed layered arrangements of platinum complexes, formed by halide ion interactions with multiple cations.
- Alcohol molecules (methanol or ethanol) were found to occupy interstitial spaces and form halide-alcohol clusters via hydrogen bonds.
- Specific analysis of the Cl(-)···HO(Me) hydrogen bond in one complex was performed using DFT.
Conclusions:
- The study elucidated the self-assembly mechanisms of cationic platinum complexes in the solid state.
- Halide ions play a crucial role in organizing the crystal structures and forming clusters with solvent molecules.
- Computational analysis provided insights into the nature of hydrogen bonding in these systems.
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