E. Olszewska

High quality powder diffraction data for A-type zeolite with selected divalent d-electron metals

Six A-type zeolites: NaA, MnNaA, CoNaA, NiNaA, ZnNaA, CdNaA have been characterized by X-ray powder diffraction. The zeolites with selected divalent cations have been synthesized by a very careful ion-exchange process using very high quality NaA zeolite. Experimental 2θ peak positions, relative peak intensities, values of d and Miller indices as well as a unit cell parameter are reported.

Powder diffraction data for the new aliphatic-aromatic thiodiols

Five new aliphatic-aromatic thiodiols: 1,2-bis[4-(2′-hydroxyethylthio)phenyl]ethane (C 18 H 22 O 2 S 2 ), 1,2-bis[4-(3′-hydroxypropylthio)phenyl]ethane (C 20 H 26 O 2 S 2 ), 1,2-bis[4-(6′-hydroxyhexylthio)phenyl]ethane (C 26 H 38 O 2 S 2 ), 1,2-bis[4-(10′-hydroxydecylthio)phenyl]ethane (C 34 H 54 O 2 S 2 ), 1,2-bis[4-(11′-hydroxyundecylthio)phenyl]ethane (C 36 H 58 O 2 S 2 ) have been characterized by X-ray powder diffraction. These thiodiols can be used for synthesis of thermoplastic nonsegmented polyurethanes. Experimental 2θ peaks positions, relative peak intensities, values of d and Miller indices as well as unit cell parameters are reported.

New powder diffraction data of some N -derivatives of 4-chloro-3,5-dimethylphenoxyacetamide-potential pesticides

N -derivatives of 4-chloro-3,5-dimethylphenoxyacetamide—2-(4-chloro-3,5-dimethylphenoxy)- N -(4-fluorophenyl)acetamide, 2-(4-chloro-3,5-dimethylphenoxy)- N -(3-chloro-4-fluorophenyl) acetamide, 2-(4-chloro-3,5-dimethylphenoxy)- N -[4-chloro-3-(trifluoromethyl)phenyl] acetamide, 2-(4-chloro-3,5-dimethylphenoxy)- N -[3-chloro-4-methylphenyl]acetamide, 2-(4-chloro-3,5-dimethylphenoxy)- N -(2,4,6-tribromophenyl) acetamide, 2-(4-chloro-3,5-dimethylphenoxy)- N -pyridin-2-ylacetamide, 1-[(4-chloro-3,5-dimethylphenoxy)acetyl]-4-methylpiperazine, and 1-benzyl-4-[(4-chloro-3,5-dimethylphenoxy)acetyl]piperazine—have been characterized by X-ray powder diffraction. These organic compounds are potential pesticides. Experimental 2θ peak positions, relative peak intensities, values of d and Miller indices, and unit-cell parameters are presented.

Mesoporous Ordered Organosilicas Containing Zr and Ti Species

Periodic mesoporous organosilica materials (PMOs) are the new class of porous and hybrid organic-inorganic materials. They represent exceptional and functional bridged polysilsesquioxanes prepared by sol-gel processing of monomers using triblock copolymers or ionic surfactants as the structure directing agents. By changing the monomer type, various organic functional groups may be incorporated into the framework of PMO materials. Moreover it is possible to introduce heteroatoms in the structure of mesoporous materials via isomorphous substitution of the silicon atoms. In the present study, we report the preparation and characterization of the series of zirconium, titanium and mixture of them, doped mesoporous silica. The PMOs have been synthesized by the hydrolysis and the condensation of bridged silsesquioxane precursors containing two different organic bridging groups ((R’)3Si-CH2-CH2-Si(R’)3, R’ - methoxy or ethoxy). The influence of temperature of synthesis on the structure of PMOs was examined. PMO-Zr and PMO-Zr-Ti were synthesized by employing a zirconyl chloride octahydrate (ZrOCl2•8H2O), titanium isopropoxide, NaCl, bis(trimethoxysilyl)ethane (BTME) as a silica source and triblock copolymer P123 as the structure directing agent while PMO-Ti was prepared using 1,2-bis(triethoxysilyl)ethane (BTESE), titanium isopropoxide, NaOH and cetyltrimethylammonium bromide (CTABr) as a structure directing agent. The resulting materials exhibited well-ordered two-dimensional hexagonal space group p6mm, high surface areas in the range of 700-1100 m2/g. The X-ray photoelectron spectroscopy (XPS) analysis indicated the successful incorporation of heteroatoms into hybrid PMOs and the IR spectra confirmed satisfactory removal of the surfactants.

New, Experimental Powder Diffraction Data for Metastable Fe3B Phase Prepared According to ICDD Standards

In the present work X-ray studies were performed on annealed Fe78Nb2B20 amorphous alloy prepared by melt-spinning technique. All the samples were annealed in vacuum for 1 hour at temperatures up to 800°C. For the studied alloy -Fe and Fe2B are the stable, crystalline phases. The -Fe crystallized as the first crystalline phase in the sample annealed at 350°C. On the other hand, metastable Fe3B phase appeared to be stable during annealing in 425-800°C temperature range. The best fitting of the experimental X-ray data to as jet available ICDD files was obtained for Ni3P type structure (39-1315 – S.G.: I (82)). New, experimental powder diffraction data for metastable Fe3B phase prepared according to ICDD standards were elaborated for the sample annealed at 600°C. For this sample the best agreement between the calculated values of lattice constants and positions of experimental diffraction lines was obtained. The X-ray data were collected using X-Pert Philips diffractometer equipped with curved graphite monochromator on diffracted beam. The Treor program was applied for the analysis of X-ray diffraction data.