آمار
| تعداد نشریات | 50 |
| تعداد شمارهها | 2,232 |
| تعداد مقالات | 20,476 |
| تعداد مشاهده مقاله | 25,292,763 |
| تعداد دریافت فایل اصل مقاله | 22,944,487 |
Computational Investigation on Naphthoquinone Derivatives :Nuclear Magnetic Resonance (NMR) and Quantum mechanic | ||
| Journal of Physical & Theoretical Chemistry | ||
| مقاله 3، دوره 15، Issue 1 (Spring and Summer 2018) 1 and 2، تیر 2018، صفحه 27-38 اصل مقاله (566.23 K) | ||
| نوع مقاله: Research Paper | ||
| نویسنده | ||
shamsa sharifi 
| ||
| Department of chemistry, Robat Karim Branch, Islamic Azad University, Robat Karim, Iran | ||
| چکیده | ||
| Naphthoquinones are natural aromatic compounds that can be discovered in various plant families. In recent times a diversity of biological activities of these compounds has been reported. In most cases, these pharmacological activities are related to redox and acid-base properties, which can be modulated synthetically by modifying the substituents attached to the 1, 4- naphthoquinone ring, in order to enhance their therapeutic actions. In the current study we used dipole moment and nuclear magnetic resonance (NMR) to depict these molecules properties. The density functional theory (DFT) calculations at the level of B3LYP/6-31G* have been applied to analyze the substituent effect on the electronic structural properties including thermochemical parameters of Naphtoquinone Derivatives in gas phase using Gaussian 98. Dipole moment (Debye), energy of structure formation (HF/Kcal/mol) and point group, NMR parameters such as isotropic shielding (σiso) and anisotropic shielding (σaniso), σ11, σ22, σ33 obtained. Also thermodynamic properties and natural bond orbitals (NBO) were calculated. It dovetails our recent work of electron transfer pathways on Naphtoquinone Derivatives in different replacement is a fundamental step in constructing a knowledge base which will ultimately be of use in many cases. | ||
| کلیدواژهها | ||
| biological activities؛ dipole moment؛ thermodynamic properties؛ DFT؛ Debye | ||
|
آمار تعداد مشاهده مقاله: 268 تعداد دریافت فایل اصل مقاله: 198 |
||
