3,3'-Dimethyl-1,1'-methyl-ene-diimidazolium dibromide

Area of Science:

• Crystallography
• Solid-state chemistry
• Supramolecular chemistry

Background:

• Understanding the crystal structure of organic compounds is crucial for predicting their physical and chemical properties.
• The role of hydrogen bonding in stabilizing crystal lattices is a fundamental concept in solid-state chemistry.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C(9)H(14)N(4) (2+)·2Br(-).
• To investigate the intermolecular interactions governing the crystal packing.
• To characterize the symmetry elements present in the crystal lattice.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the three-dimensional arrangement of atoms.
• Crystallographic symmetry operations were analyzed to identify mirror planes and other symmetry elements.
• Intermolecular interactions, specifically hydrogen bonding (C-H⋯Br), were identified and analyzed.

Main Results:

• The crystal structure exhibits crystallographic mirror symmetry for both the cation and anions.
• C(9)H(14)N(4) cations are stacked along the a axis, creating channels.
• Bromide anions are hosted within these channels, and the packing is stabilized by C-H⋯Br hydrogen bonds, forming a 2D network.

Conclusions:

• The study successfully determined the crystal structure of C(9)H(14)N(4) (2+)·2Br(-).
• The observed crystal packing, stabilized by hydrogen bonding, highlights the importance of non-covalent interactions in supramolecular assembly.
• The findings contribute to the understanding of structure-property relationships in organic salts.