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Updated: May 3, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Hexane-1,6-di-ammonium hexa-fluoro-silicate
Ali Ouasri1, Ali Rhandour2, Mohamed Saadi3
1Département de Physique-Chimie, Laboratoire de Chimie, Centre Régional des Métiers de l'Education et de la Formation, Souissi Rabat, Morocco ; Equipe de Physico-Chimie des Matériaux Inorganiques, Université Ibn Tofail, Faculté des Sciences, BP 133, 14000 Kénitra, Morocco.
This study details the crystal structure of an organic-inorganic molecular salt, C6H18N2 (2+)·SiF6 (2-). The structure reveals octahedral hexafluorosilicate anions forming sheets linked by cations via hydrogen bonds.
Area of Science:
- Crystal chemistry
- Materials science
- Supramolecular chemistry
Background:
- Organic-inorganic molecular salts offer tunable properties.
- Understanding crystal packing is crucial for material design.
Purpose of the Study:
- To elucidate the crystal structure of the C6H18N2 (2+)·SiF6 (2-) salt.
- To investigate the role of hydrogen bonding in the material's network formation.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed.
- The crystallographic data were analyzed to determine atomic positions and bonding.
Main Results:
- The asymmetric unit contains cations and anions, with some located on inversion centers.
- Octahedral hexafluorosilicate (SiF6 2-) anions form sheets parallel to the (011) plane.
- The organic cations facilitate the linkage of these sheets into a 3D network via N-H⋯F hydrogen bonds.
Conclusions:
- The crystal structure of C6H18N2 (2+)·SiF6 (2-) was successfully determined.
- Hydrogen bonding plays a key role in assembling the molecular salt into a three-dimensional supramolecular architecture.
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