نتایج جستجو برای: carboxylate and pyridine
تعداد نتایج: 16831862 فیلتر نتایج به سال:
Pyridine-2,4,6-tricarboxylic acid (ptcH(3)) reacts with Cd(II), Mn(II), Ni(II), Mg(II), Ca(II), Sr(II), Ba(II), Dy(III) salts forming different products depending on the reaction conditions. In the presence of pyridine at room temperature the acetate, chloride or nitrate salt of Cd(II) breaks the ligand to form an open framework structure with the empirical formula, {[Cd(Ox)(H(2)O)(2)]H(2)O}(n)...
abstract: two new transition metal complexes, containing the acidic ligand 5-chlorosalicylic acid (h2l5), and 1,10-phenanthroline(phen) and 1,3-di(4-pyridyl)propane (bpp) as secondary ligands are reported. they are formulated as {[pb(hl5)2(phen)(h2o)]·h2o}n(1), [zn2(hl5)4(bpp)2]n(2). all the complexes are characterized by single-crystal x-ray diffractions. compoud 1 crystallizes in the triclini...
Quinolines are aromatic compounds consisting of benzene rings with a pyridine heterocyclic system. In this study, the structure and orbital interactions methyl 5-6 dihydro benzo(h) quinolone-4-carboxylate (MDQC) molecule, which is quinoline derivative, were analyzed. calculation using B3LYP/6-311++g(d,p) level, three conformers found in minimum energy state according to O=C-O-C dihedral angle s...
dacarbazine is an antitumor prodrug which is used for the treatment of malignant metastatic melanoma and hodgkin’s disease. it requires initial activation in liver through an n-demethylationreaction. the active metabolite prevents the progress of disease via alkylation of guanine bases in dna strands. in order to investigate the importance of imidazole ring and its dynamictautomerization in ant...
در این پایان نامه، ابتدا به شرح روش تهیه و بررسی خواص طیفی و مغناطیسی چهار کمپلکس کروم(iii) و دو کمپلکس منگنز(ii) با فرمول های بسته cr(l)3 ، cr2(l)2(oh)5(ch3coo) ، mn(l)4cl2 و mn(l)4(no3)2 پرداخته شده است که در آن هاl= 2-carboxylic acid pyridine ، 2-amino-4-methyle pyridine، 2-amino-3-methyle pyridine ،3-methanol pyridine و acid hydrazide 4-pyridine carboxylic می باشد. در ادامه، دو لیگاند با...
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