X-Ray powder diffraction data

According to X-ray powder diffraction data, compounds RF NbOFs, Cs2NbOF5 [174] and Cs2TaOF5 [176] have similar type structure and are similar to K2GeF6, whereas (NFL,)2NbOF5 crystal structure is similar with Rb2Mo02F4 [184]. The above-mentioned compounds contain isolated NbOF52" complex ions [185]. 

X - Ray powder diffraction data of some important tantalum and niobium fluoride compounds (CuKa radiation)... 

Salole and Pearson reported the X-ray powder diffraction data for miconazole and econazole [39]. The X-ray powder diffraction patterns and data for the unsolvated samples of miconazole and econazole are reported. 

For both structures, all final Si positions were obtained with reasonable accuracy (0.1 -0.2 A) by a 3D reconstruction of HRTEM images followed by a distance least-squares refinement. This kind of accuracy is sufficient for normal property analysis, such as catalysis, adsorption and separation, and as a starting point for structure refinement with X-ray powder diffraction data. The technique demonstrated here is general and can be applied not only to zeolites, but also to other complicated crystal structures. 

The X-ray powder diffraction data for calcitriol are presented in Table III (3) instrumental conditions are given below. The diffraction pattern is shown in Figure 5. 

X-ray powder diffraction data for hydralazine hydrochloride and hydralazine base are given in Table 1. 

Wilson, S.A., Raudsepp, M., Dipple G.M. 2006. Verifying and quantifying carbon fixation in minerals from serpentine-rich mine tailings using the Rietveld method with X-ray powder diffraction data. American Mineralogist, 91, 1331-1341. 

Organic pigments have been reviewed [118]. X-ray powder diffraction data of many organic colorants have been collected and discussed [119]. 

Figure 1.9. Location of MV2+ in zeolite L based on X-ray powder diffraction data [25], Left View along the channel axis showing the position and orientation of a molecule. Right Side view of the channel depicting the arrangement of the molecules.

Experimental tilt angles have usually an accuracy of at best 3°, leading to an error of about 0.1 A in cell axes. The calculated third cell axis will show a higher deviation. If possible an internal standard should be used for calibration purposes but a higher accuracy will be obtained with a Pawley fit (e.g. fit forP CuPc in Fig. 6) from x-ray powder diffraction data [11]. Especially for packing energy minimization used for simulation methods it is essential to determine the cell parameters as precise as possible. In the case of polymorphism, it is essential to use x-ray powder diffraction to ensure that bulk and investigated nano crystals represent the same modifications. 

Figure 1.9. Location of in zeolite L based on X-ray powder diffraction data...

AIPO4-8 (ref. 13) appears to contain VPI-5 from X-ray powder diffraction data. However, we conclusively showed that no VPI-5 is contained in AIPO4-8 (ref. 10). Here, we will demonstrate that certain samples of VPI-5 can be transformed to AIPO4-8. 

The pH values of quenched autoclave contents are recorded prior to dilution with water for product recovery. Thermogravimetric analyses (T6A) were performed in air on a DuPont 951 thermogravimetric analyzer. A Siemens 12 X-ray diffractometer was used to collect X-ray powder diffraction data with CuKa radiation. Magic angle spinning P NMR spectra were recorded on a Bruker MSL 300 spectrometer. The P NMR spectra were taken at a frequency of 121.496 MHz and a spinning rate of 3-5 kHz. Chemical shifts are reported relative to 85 wt% H3PO4. 

Owen et al. reported x-ray powder diffraction data for procaine and 16 other anesthetics, as obtained using the Debye-Scherrer technique [55]. 

Syntheses of near-single phases of the lead-substituted thallium monolayer phases with up to 6 Cu-O layers i.e., Pb-doped 1212, 1223, 1234, 1245, and 1256, have been recently reported (21). Reactant mixtures of various proportions of Tl2Os, PbO, CaO, Ba02, and CuO were pelletized, wrapped in gold foil, and sintered at 860-900°C under flowing oxygen for 10-30 h. The Tc value reached a maximum of 121 K for the 1234 compound and declined with further increase in the number of Cu-O layers. X-ray powder diffraction data for the different phases were refined using the Rietveld method and a consistent increase in the c-axis accompanied the increase in number of Cu-O layers. 

Soon after the first synthesis of bis(cyclopentadienyl)magnesium (56), its structure in the solid state, based on X-ray powder diffraction data, was reported . A more refined structure based on a single-crystal X-ray diffraction study was reported later . The structure in the solid state is isostructural with that of ferrocene. The two parallel... 

X-Ray Diffraction Analysis. X-ray powder diffraction data for indexing were obtained with a General Electric XRD-6 diffractometer. Samples were sealed in glass capillaries (0.5 mm o.d.) and exposed to nickel-filtered CuKa radiation. KCl or iridium was used as an internal standard. X-ray powder diffraction intensity data were obtained with a General Electric XRD-5 unit. Here,... 

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