فهرست مطالب

  • Volume:5 Issue:2, 2018
  • تاریخ انتشار: 1397/05/01
  • تعداد عناوین: 5
|
  • Neda Hajizadeh Pages 449-456
    In this article, synthesis of the explosive 2, 6 (diamino) 3, 5 dinitro pyridine (ANPY) of the direct nitration reaction of 2, 6 diamino pyridine in different conditions of temperature, with density functional theory method were studied. For this purpose, at first the material contained in the both sides of reaction were geometrically optimized, then the calculation of the thermodynamic parameters performed on all of them. The amount of ∆H, ∆S and ∆G of this reaction at different temperatures in form of sum of parameters discrepancy in the products than reactants is obtained and finally, the best temperature for the synthesis of explosive according to the obtained thermodynamic parameters were evaluated.
    Keywords: Explosives, ANPY, Synthesis, 2, 6 diamino 3, 5 – dinitro pyridine, nitration reaction
  • Neda Hajizadeh , Azade Saadat Pages 457-465
    In this article, synthesis of the explosive synthesis of 5- picrylamino-1, 2, 3, 4-tetrazole (PAT) from the reaction of 5-amino-1, 2, 3, 4-tetrazole with picryl chloride in different conditions of temperature, with density functional theory method were studied. For this purpose, at first the material contained in the both sides of reaction were geometrically optimized, then the calculation of the thermodynamic parameters performed on all of them. The amount of ∆H, ∆S and ∆G of this reaction at different temperatures in form of sum of parameters discrepancy in the products than reactants is obtained. And finally, the best temperature for the synthesis of explosive according to the obtained thermodynamic parameters were evaluated.
    Keywords: 5- picrylamino-1, 4-tetrazole (PAT), Synthesis, 5-amino-1, 2, 3, 4-tetrazole, picryl chloride
  • Masoumeh Jafari Pages 466-475
    In this article, synthesis of the synthesis of Imine: phenyl-N-((R)-2-((piperidine-1-yl) methyl)cyclohexylidene)methanamine from the reaction of (R)-2-((piperidin-1-yl) methyl) cyclohexanone with benzylamine in different conditions of temperature, with density functional theory method were studied. For this purpose, at first the material contained in the both sides of reaction were geometrically optimized, then the calculation of the thermodynamic parameters performed on all of them. The amount of ∆H, ∆S and ∆G of this reaction at different temperatures in form of sum of parameters discrepancy in the products than reactants is obtained. And finally, the best temperature for the synthesis of explosive according to the obtained thermodynamic parameters were evaluated.
    Keywords: Imine, Synthesis, (R)-2-((piperidin-1-yl) methyl) cyclohexanone, Benzylamine
  • Ali Arastehnodeh , Majid Saghi Pages 476-486
    Enaminones are chemical compounds consisting of an amino group (−N=) linked through a C=C to a C=O group. In this research, four various enaminone structures were theoretically optimized. These enaminone structures have been studied for substituent effect on hydrogen bond, method and basic set effects on the geometrical parameters, vibrational frequencies and etc. Drawing molecular structures and computer calculations were performed with Gauss view (5.0) and Gaussian (09) softwares, respectively. The utilized methods in the paper were the HF and DFT and of DFT methods of basic functions B3LYP and B3P86. Also Basis sets of 6-311G, 6-311G*, 6-311G**, 6-311+G** and 6-311++G** have been utilized. Generally the results of computer calculations and comparing them with experimental equivalents indicate that theoretical procedures could well be helpful and effective in enaminone studies and offer reasonable and well results. Enaminone structure was studied for tautomerism and it was revealed that Ketamine form is more stable than Enolimine form
    Keywords: Enaminone, HF, DFT, Geometry, Hydrogen bonding
  • Nabi Salehpour Pages 487-492
    In this research of cis, trans and vinyl monomeric derivatives of 1,4-butadiene were studied using C20 in different temperatures by Functional density theory (DFT). To this purpose, the materials were firstly optimized geometrically, then the calculations of the thermodynamic parameters were performed on all of them. In the following, changes in parameters of energy such as specific heat capacity, enthalpy, entropy and Gibbs free energy, which were calculated per molecular weight, molecular volume to and surface, which were measured in this probe, were evaluated with respect to each other.
    Keywords: Cis, Trans, Vinyl, 1, 4- butadiene monomers, C20, density functional Theory Method