Ara
Toplam kayıt 25, listelenen: 11-20
Characterization and pillaring of a Turkish bentonite (Resadiye)
(Elsevier, 2007)
The shifts of the Si{single bond}O{single bond}Si stretching and the Si{single bond}O{single bond}Al and Si{single bond}O{single bond}Si bending modes, as well as the free silica peak in the IR spectra and the strengthening ...
Structural characteristics of organo-modified bentonites of different origin
(Springer, 2007)
Organobentonites were synthesized by treating Na-bentonites (Wyoming and Reşadiye) with cetylpyridinium chloride (CPC) using ion exchange method. The difference in the basal spacing by 0.65 Å and a higher mass loss by ...
Determination of the protonation constants of some 4-(substituted benzylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones by the potentiometric method in ethanol-water mixtures
(2007)
To gain more information about the effect of solvent on 4,5-dihydro-1H-1,2,4-triazol-5-ones, the stoichiometric protonation constants of thirteen triazoles in ethanol-water mixtures were determined at an ionic strength of ...
4-Amino-3,5-diethyl-4H-1,2,4-triazole at 100 K: Chains of edge-fused R 44(10) and R44(20) rings
(Wiley, 2007)
The title compound, C6H12N4, has four crystallographically independent mol-ecules in the asymmetric unit. Inter-molecular N - H?N hydrogen bonds involving amino groups and triazole N atoms form a three-dimensional framework ...
4-(4-Allyl-2-meth-oxyphen-oxy)benzene-1,2-dicarbonitrile
(Wiley, 2007)
In the title compound, C18H14N2O2, the dihedral angle between the two benzene rings is 88.6 (1)°. The allyl group is disordered over two orientations, with refined occupancies of 0.695 (6) and 0.305 (6). The meth-oxy group ...
The microwave-assisted synthesis and characterization of novel polymeric phthalocyanines containing resorcinarene
(Elsevier, 2008)
Novel metal phthalocyanine (Cu, Zn, Co, Ni) polymers containing resorcinarene moieties were prepared; the resorcinarene was obtained by the acid-catalysed cyclocondensation of resorcinol and acetaldehyde under microwave ...
Synthesis and crystal structure of N-(3-methyl-5-phenyl-3,5-dihydro-4H-1,2,4-triazol-4-yl)benzamide
(Japan Society for Analytical Chemistry, 2008)
The title compound, N-(3-methyl-5-phenyl-3,5-dihydro-4H-1,2,4-triazol-4-yl)benzamide, C16H14N4O, crystallizes in the monoclinic space group P21/c with the following unit cell parameters: a = 10.6011(6)Å, b = 7.5676(4)Å, c ...
Studies on the protonation constants of some triazoles in ethanol-water mixtures
(Chemical Publishing Co., 2008)
Several studies, involving the formation and investigation of biological activities of some triazoles derivatives. These derivatives have weak acidic properties. To gain more information about the effect of solvent on ...
Determination of the protonation constants of triazole derivatives in non-aqueous solvents
(2009)
Different 17 triazole derivatives were titrated with tetrabutylammonium hydroxide in four non-aqueous solvents (isopropyl alcohol, rert-butyl alcohol, N,N-dimethylformamide and acetonitrile), using Potentiometric method. ...
Structural analysis of reactive dye species retained by the basic alumina surface
(2009)
The alumina-dye composites were prepared by treating the basic alumina with the water solutions of Reactive Red 120 (RR 120) and Reactive Blue 15 (RB 15) dyes. The bands of low intensities in the 1400-1600 cm-1 region and ...