Isomer Test of DFT: Chlorofluoroethenes
نویسنده
چکیده
DFT calculations have been performed for all isomeric chlorofluoroethenes. The relative stabilities of different isomers have been calculated and compared with experimental enthalpies of formation. The DFT method, which uses the non-local density approximation (NLDA) and Becke-Lee-Yang-Parr functional, has been found to be a fairly reliable method for predicting relative thermodynamic stabilities.
منابع مشابه
Adsorption of melphalan anticancer drug on the surface of fullerene (C24): a comprehensive DFT study
Objective (s): The present study aimed to assess the adsorption of fullerene C24 with Melphalan anticancer agent in a solvent phase (water) at the B3LYP/6-31G (d) theoretical level.Materials and Methods: Initially, the structures of Melphalan and fullerene complexes were optimized in four configurations. Afterwards, IR calculations and molecular orbital analysis were performed. In addition, som...
متن کاملStructure and isomeric studies of 1,3-diaryl-H-benzo[f]chromene, catalyst effect or thermodynamic stability? An ab initio study
Two possible isomers of some 1,3-diaryl-H-benzo[f]chromene have been studied using density functional theory. Structures of E1 and E2 isomers were optimized at the B3LYP and MP2 levels with different basis sets. The total electronic energies show that E2 isomer is about 3-5 kcal/mol more stable than E1 isomer and this energy difference is attributed to the planarity of heterocyclic ring and mor...
متن کاملCarbon and BN nanocones as nano carriers for 5-Fluorouracil, a DFT study
5-Fluorouracil (5-FU) is an anticancer drug. In this work, we have investigated the electronic properties and topological analysis of interaction between 5-FU and carbon nanocone and BN nanocone. The structural stability of isomer complexes of 5-FU with carbon nanocone and BN nanocone have been investigated for two position of interactions. We have found that the most stable complexes are forme...
متن کاملThe Nitrogen atom effect on structural and magnetic properties of Fullerene C20:A DFT study
The fullerene structures of C20cage and bowl,C20H10 and their N-doped structures as C20cage NH,C20bowl NH, C20H10NH, C20H10N and their isomers are optimized using the MPW1PW91/6-31G level of the theory. Magnetic shielding tensors of 14N and 13C atoms are calculated by the same level of the theory. Results show that doping an N atom on fullerenes affects differently on the chemical shielding of ...
متن کاملThe Nitrogen atom effect on structural and magnetic properties of Fullerene C20:A DFT study
The fullerene structures of C20cage and bowl,C20H10 and their N-doped structures as C20cage NH,C20bowl NH, C20H10NH, C20H10N and their isomers are optimized using the MPW1PW91/6-31G level of the theory. Magnetic shielding tensors of 14N and 13C atoms are calculated by the same level of the theory. Results show that doping an N atom on fullerenes affects differently on the chemical shielding of ...
متن کامل