Molecular Structure Analyses of Some Crystals Containing Aromatic-Structured Acids by X-ray Diffraction Method and Quantum Mechanical Calculations

Aromatic-structured acids and their complexes are having with biological importance, in particular molecules which are used in the food industry due to enzymatic activity and antimicrobial properties. In this study, crystal structure analyses were performed by X-ray diffraction method, and biological analysis of synthesized aromatic-structured complex molecules determined. In order to support and compare of the experimental results for these complexes, the quantum mechanical Hartree-Fock (HF) and Density Functional Theory (DFT) methods were investigated by theoretical calculations. Many information at the atomic level for the complex molecules such as, conformations in the unit cell, energies, bond lengths and angles, molecular packing, intra- and inter-molecular hydrogen bonding interactions were presented.