Crystal structure of tetra-kis-(μ

Area of Science:

• Coordination Chemistry
• Supramolecular Chemistry
• Crystal Engineering

Background:

• Trinuclear metal complexes offer unique structural and electronic properties.
• Phenolate ligands with pyridine moieties are versatile in coordinating metal ions.
• Understanding intermolecular forces is crucial for designing functional materials.

Purpose of the Study:

• To synthesize and characterize a novel trinuclear zinc complex.
• To investigate the structural features and intermolecular interactions within the complex.
• To explore the self-assembly behavior driven by non-covalent interactions.

Main Methods:

• Single-crystal X-ray diffraction analysis to determine the molecular and crystal structure.
• Spectroscopic methods for characterization of the complex.
• Analysis of non-covalent interactions such as pi-pi stacking, halogen bonding, and hydrogen bonding.

Main Results:

• A symmetrical trinuclear zinc cation, [Zn3(C14H11Br2N2O)4]2+, was successfully synthesized and characterized.
• The central tetrahedral Zn(II) atom bridges two octahedral Zn(II) atoms, coordinated by four tridentate ligands.
• Intramolecular pi-pi stacking and halogen bonding within the cation, along with inter-species C-H...O and C-H...N interactions, stabilize the 3D crystal structure.

Conclusions:

• The synthesized complex exhibits a complex, symmetrical trinuclear structure stabilized by various non-covalent interactions.
• The study highlights the role of halogen bonding and pi-pi interactions in dictating the conformation of the complex.
• The findings contribute to the understanding of crystal packing and the design of novel coordination compounds.