3,3'-Dibenzyl-2,2'-dimethyl-1,1'-methyl-enediimidazolium dipicrate

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding the molecular geometry of organic salts is crucial for predicting their physical and chemical properties.
• Dicationic salts with imidazolium cores are of interest for various applications, including ionic liquids and pharmaceuticals.

Purpose of the Study:

• To elucidate the precise three-dimensional structure of a specific dicationic salt, C(23)H(26)N(4) (2+)·2C(6)H(2)N(3)O(7) (-).
• To quantify the dihedral angles between the imidazolium rings and the orientation of the benzyl group's aromatic ring relative to the heterocyclic system.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular structure.
• Analysis of the crystallographic data allowed for the precise measurement of bond lengths, bond angles, and dihedral angles.

Main Results:

• The crystal structure revealed a dication with two imidazolium rings. The dihedral angle between these imidazolium rings was determined to be 69.9(1)°.
• The aromatic ring of the benzyl group exhibited near-perpendicular orientations relative to the directly attached N-heterocyclic ring, with dihedral angles of 83.2(2)° and 77.3(3)°.

Conclusions:

• The determined molecular geometry provides a detailed structural basis for understanding the properties of this dicationic salt.
• The specific spatial arrangement of the imidazolium rings and benzyl groups may influence intermolecular interactions and bulk material properties.