Keywords
atom–atom potentials method
benzene
benzotrifuroxan
bimolecular complex
cocrystal
complexation energy
crystal structure
DFT
global optimization
potential energy surface
Abstract
Based on a combination of quantum chemistry and atom–atom potentials methods, we developed a technique for modeling the structure and estimating the complexation energy of a binary organic complex in gas and crystal phases. The efficiency of this technique was illustrated by an example of the benzotrifuroxan–benzene molecular complex. For both phases, the same molecular binary structure (π-stacking) was obtained with a parallel arrangement of the planes of BTF and benzene molecules and complexation energies of −11.9 and −11.7kcalmol−1 for a gas phase and a crystal cluster, respectively.
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