Ara
Toplam kayıt 86, listelenen: 1-10
Ethyl 4-hydroxy-9-tosyl-9H-carbazole-3-carboxylate
(Int Union Crystallography, 2009)
In the title compound, C22H19NO5S, the carbazole skeleton is nearly planar [maximum deviation = 0.043 (1) angstrom] with the pyrrole ring oriented at dihedral angles of 2.32 (6) and 1.77 (6)degrees with respect to the ...
Spectroscopic determination of acid dissociation constants of some pyridyl Shiff bases
(American Chemical Society, 2006)
The acid dissociation constants (pK(a)) of eight biologically active pyridyl Shiff bases were determined using a UV-vis spectroscopic technique at 25 +/- 0.1 degrees C. The first acidity constants (pK(a1)) of the ...
Synthesis, spectral studies of salicylidine-pyridines: Crystal and molecular structure of 2-[(1E)-2-aza-2-(5-methyl (2-pyridyl)ethenyl)]-4-bromobenzen-1-ol
(Pergamon-Elsevier Science LTD, 2007)
Schiff bases derived from different meta-substituted salicylaldehyde and 5-methylaminopyridine have been synthesized and characterized by elemental analysis, FT-IR, NMR and UV-vis techniques. NMR assignments were made using ...
3-[(5-Chloro-2-hydroxybenzylidene)amino]-2-sulfanylidene-1, 3-thiazolidin-4-one
(2013)
In the title compound, C10H7ClN2O2S2, the mean plane of the thioxothiazolidine ring [maximum deviation = 0.032 (2) Å] is inclined to the benzene ring by 12.25 (4)°. There is a strong intramolecular O - H...N hydrogen bond ...
Tetrakis[mu-4-(dimethylamino)benzoato-kappa O-2:O ']bis[(N,N-diethylnicotinamide-kappa N-1)zinc(II)]
(Int Union Crystallography, 2009)
The title molecule, [Zn-2(C9H10NO2)(4)(C10H14N2O)(2)], is a centrosymmetric binuclear complex, with Zn atoms [Zn center dot center dot center dot Zn ' = 2.8927 (4) angstrom] bridged by four carboxylate groups from the ...
2-Methyl-5-nitro-1H-benzimidazol-6-amine dihydrate
(Wiley-Blackwell, 2011)
The title benzimidazole molecule, C8H8N4O2 center dot 2H(2)O, is planar with a maximum deviation of 0.079 (2) angstrom (for one of the O atoms in the nitro group). It crystallized as a dihydrate and intermolecular O-H ...
Intramolecular Hydrogen Bonding and Tautomerism in Schiff Bases: Synthesis, Spectroscopic and Theoretical Studies of N-(2,2 '-Methylenebis(4-methoxyphenyl)salicylidene and N-(2,2 '-Methylenebis(4-methoxyphenyl)-2-oxonaphthalidene-methylamine
(Asian Journal Of Chemistry, 2014)
The new Schiff bases (4 and 5) were synthesized respectively from the reaction of 2,2'-methylenebis(4-aminomethoxybenzene) (3) with salicylaldehyde and 2-hydroxy-1-naphthaldehyde. The products have been characterized by ...
Synthesis of ferrocene substituted dihydrofuran derivatives via manganese(III) acetate mediated radical addition-cyclization reactions
(Pergamon-Elsevier Science LTD, 2017)
In this study, the manganese(III) acetate mediated radical addition-cyclization reactions of ferrocene substituted alkenes and active methylene compounds were carried out. The regio- and stereoselective radical cyclization ...
Hydrothermal Synthesis and Crystal Structure of Novel Oxovanadium Coordination Polymer: [((VO)-O-IV)(2)(OH)(2)(C10H6(COO)(2))](infinity)
(Taylor & Francis Inc, 2016)
A novel coordination polymer [((VO)-O-IV)(2)(OH)(2)(C10H6(COO)(2))](infinity) based on vanadium(IV) and 2,6-naphthalenedicarboxylato ligand has been prepared by hydrothermal synthetic method. The compound was characterized ...