نتایج جستجو برای: carboxylate and pyridine

تعداد نتایج: 16831862  

Journal: :Acta Crystallographica Section E Structure Reports Online 2010

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

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...

Journal: :Metal-Based Drugs 1995
M. Galanski B. K. Keppler

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...

Journal: :European Journal of Chemistry 2023

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...

Journal: :Dalton transactions 2005
Chao Qin Xin-Long Wang Yang-Guang Li En-Bo Wang Zhong-Min Su Lin Xu Rodolphe Clérac

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...

2009
Xia Li Wei Liu Ben-Lai Wu Hong-Yun Zhang

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...

2008
Jan Moncol Dušan Mikloš Peter Segľa Marian Koman Tadeusz Lis

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 ...

Journal: :The Journal of antibiotics 1987
A Ejima T Hayano T Ebata T Nagahara H Koda H Tagawa M Furukawa

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...

2010
Fang-Hong Hu Jian-Li Lin

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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