نتایج جستجو برای: carboxylate and pyridine
تعداد نتایج: 16831862 فیلتر نتایج به سال:
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
A series of new ethylenediamine (en) platinum(IV) complexes of the type Pt((IV))enX(2)A(2), with X(2) = cyclobutane-1,1-dicarboxylato (CBDCA), dichloro or bis(decanoato) and A = acetato, dodecanoato, tetradecanoato, hexadecanoato, octadecanoato, adamantanecarboxylato (Ad) or 3alpha, 12alpha-diformoxy-5beta-cholato (DFCA) were synthesized and characterized by elemental analysis, infrared and NMR...
In the present investigation, corrosion inhibition potency of five pyridine derivatives was computationally simulated and investigated by utilizing Density Functional Theory (DFT) technique using a basis set B3LYP/6-31++G (d,p). The predicted capacity shown to improve in order 6-(trifluoromethyl) nicotinic acid > 4-(trifluoromethyl) N-methyl-4-chloropyridine-2-carboxamide 2-chloro-6-trifluor...
Two new three-dimensional nickel coordination polymers, [Ni3(BTC)2(4,4'-bpy)2(H2O)5].1.5H2O (1) and [Ni(PDB)(4,4'-bpy)].0.5H2O (2)(4,4'-bpy = bipyridine, BTC = 1,2,4-benzenetricarboxylate, PDB = pyridine-3,4-dicarboxylate), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, TGA, and single crystal X-ray diffraction. Both compounds contain 2D scaffol...
In the title complex, [Fe(C(10)H(6)N(3)O(4))(2)(H(2)O)(2)], the Fe(II) atom is located on a twofold rotation axis and is coordinated by two trans-positioned N,O-bidentate and zwitterionic 5-carboxy-2-(pyridinium-4-yl)-1H-imidazol-1-ide-4-carboxylate H(2)PIDC(-) ligands and two water mol-ecules in a distorted environment. In the crystal packing, a three-dimensional network is constructed via hyd...
In the crystal structure of the title compound, [Cd(C(15)H(14)NO(2))(2)(C(6)H(7)NO)(2)](n), the Cd atom displays a distorted octa-hedral geometry, including two pyridine N atoms and two hydroxyl O from four symmetry-related 3-pyridylmethanol (3-pyme) ligands and two carboxylate O atoms from mefenamate [2-(2,3-dimethyl-anilino)benzoate] anions. The Cd atoms are connected via the bridging 3-pyme ...
A series of potent antimicrobial agents have been prepared. These derivatives are cephalosporins carrying a pyridine ring substituted with a heterocycle in the C-3 position. Some of them showed excellent activity not only against Gram-negative organisms including Pseudomonas aeruginosa but also against Gram-positive ones. In view of their biological and physico-chemical properties, 7 beta-[2-(2...
In the title compound, 2Na(+)·C(9)H(3)NO(8) (2-)·3H(2)O, the asymmetric unit consists of two Na(+) cations, one dihydrogen pyridine-2,3,5,6-tetra-carboxyl-ate dianion (H(2)pdtc(2-)) and three water mol-ecules coordinated to the Na(+) cations. The configuration of the anion is stabilized by intramolecular O-H⋯O hydrogen bonding between vicinal carboxylate/carboxy groups. The Na(+) cations are br...
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