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دراسة بايوكيميائية وجزيئية لتاثير مرض السكري من النوع الثاني على مستوى الهوموسيستين وعلاقته بالجين (SHMT1C1420T) == Biochemical And Molecular Study On The Effect of Diabetes Type II On Homocysteine Level And Its Relationship With Gene (SHMT1C1420T)
Author name:
حسام داود عبد الله
Supervisor name:
نزار احمد ناجي | عقيل حسين علي
General topic:
Chemistry
Specific topic:
Inorganic Chemistry
Degree:
Master
University:
Tikrit University - College Of Science For Girls - Chemistry Department
Language:
Arabic
University location:
Salahaddin
First pages:
25T1502 - p.pdf
Abstract:
في هذا البحث تم تحضير واستخدام ليكاندين من مشتقات ال 2 - مركبتوبنزاميدازول وهما 2 - بنزويل ثايو بنزاميدازول (L1) و2 - ) بارا نايتروبنزويل ) ثايوبنزاميدازول (L2) لتحضير نوعين من المعقدات احدهما بوجود الليكاند المشترك phenanthroline (L') 1,10 - مع ايونات ا | IN this work Two of 2 - mercaptobenzimidazole derivatives ligands 2 - benzoyl thiobenzimiazole (L1) and 2 - (p - nitrobenzoyl) thiobenzimiazole (L2) were prepared and used to synthesize two types of transition metal complexes ; One of the set of complexes was prepared in presence of a co - ligand 1,10 - phenanthroline(L') with the metal ions V(IV), Cr(III), Co(II), Ni(II), Cu(II), Cd(II) and Zn(II), the other set of complexes was prepared with the heavy metal ions Rh(III), Pd(II), Pt(IV) and Au(III) using conventional method. These ligands and their metal complexes were isolated and characterized in solid state using FT - IR, UV - Vis spectroscopy, Nuclear magnetic resonance spectra 1H, 13C - NMR, flame atomic absorption, elemental analysis C.H.N.S. and magnetic susceptibility measurements as well as melting point and conductivity measurements. The nature of bonding between the metal ion and the donor atoms of the ligands was demonstrated through the calculation of Racah parameter and other ligand field parameters, which were calculated using suitable Tanabe - Sugano diagrams. The nature of some (L2) complexes in liquid state was studied by following the molar ratio method which gave results approximately identical compared with those obtained from the isolated in the solid state; also, stability constants of the prepared complexes were studied , they were stable in the molar ratio 1 : 1.According to the results of the above measurements, the following shapes were suggested for the prepared complexes : Complexes of mixed ligands (L1 with L') : All complexes have an Oh geometry except V(IV) complex has a square pyramid geometry. Complexes of ligand (L2) : Complexes of Rh(III), Pd(II) and Au(III) have a square planar geometry, while Pt(IV) complex has an Oh geometry.A theoretical treatment of the ligands and the prepared complexes in gas phase was done using two programs; Hyperchem - 8 and Gaussian program (GaussView Currently Available Versions (5.0.9) along with Gaussian 09 which is the latest in the Gaussian series of programs).Hyper chem. - 8 program used the molecular mechanics and semi - empirical calculation, the heat of formation (?H?f), binding energy (?Eb) dipole moment (µ) for the free ligands and their metal complexes were calculated using ZINDO/1, PM3 and AMBER methods at 298 K. It was found that the complexes were more stable than their ligands; furthermore, the electrostatic potential of free ligands was calculated to investigate the reactive site of the molecules, PM3 was used to evaluate the vibrational spectra of free ligands ,the obtained frequencies agreed well with those values experimentally found; in addition, the calculation helped to assign unambiguously the most diagnostic bands.Electronic spectra measurements for the ligands were calculated theoretically using ZINDO/S method comparing it with the experimental results. It was found that there was a closely relationship between the theory and experimental spectra.Gaussian program semi - empirical (PM3) method which used in order to calculate : the geometry optimization, dipole moment (?),total energy ,electrostatic potential, ELUMO and EHOMO was obtained, evaluate the vibrational spectra of free ligands and these obtained frequencies agreed well with those values experimentally found.Also electronic spectra measurements for the ligands were calculated theoretically by using the job type : Single point energy (SP) along with ZINDO method and also the job type frequency (Freq) used along with CIS method (3 - 21G).
