Crystal structures and X-ray powder diffraction data for Cs2NiSi5O12, RbGaSi2O6, and CsGaSi2O6 synthetic leucite analogues
نویسندگان
چکیده
Leucites are tetrahedrally coordinated silicate framework structures with some of the silicon cations partially replaced by divalent or trivalent cations. These have general formulae A 2 B Si 5 O 12 and AC 6 ; where is a monovalent alkali metal cation, C cation. In this paper, we report Rietveld refinements three more synthetic leucite analogues stoichiometries Cs NiSi , RbGaSi CsGaSi . Ia $\bar{3}$ d cubic isostructural CuSi I 4 1 / tetragonal KGaSi $I\bar{4}3d$ RbBSi
منابع مشابه
Crystal structures of crotonaldehyde semicarbazone and crotonaldehyde thiosemicarbazone from X-ray powder diffraction data
Crotonaldehyde semicarbazone {systematic name: (E)-2-[(E)-but-2-en-1-yl-idene]hydrazinecarboxamide}, C5H9N3O, (I), and crotonaldehyde thio-semi-carba-zone {systematic name: (E)-2-[(E)-but-2-en-1-yldene]hydra-zinecarbo--thio-amide}, C5H9N3S, (II), show the same E conformation around the imine C=N bond. Compounds (I) and (II) were obtained by the condensation of crotonaldehyde with semicarbazide ...
متن کاملX-ray single crystal and powder diffraction: possibilities and applications
In this article the main possibilities of single crystal and powder diffraction analysis using conventional laboratory x-ray sources are introduced. Several examples of applications with different solid samples and in different fields of applications are shown illustrating the multidisciplinary capabilities of both techniques. Handbook of instrumental techniques from CCiTUB X-ray single crystal...
متن کاملCrystal structure of Ni-sorbed synthetic vernadite: A powder X-ray diffraction study
15 16 Vernadite is a nanocrystalline turbostratic phyllomanganate ubiquitous in the environment, 17 which contains nickel in specific settings such as oceanic sediments. To improve our 18 understanding of nickel uptake in this mineral, two series of synthetic analogs to vernadite (δ19 MnO2) were prepared with Ni/Mn atomic ratios ranging from 0.002 to 0.105 at pH 4 and from 20 0.002 to 0.177 at ...
متن کاملX-Ray Powder Diffraction Metrics
To compare sample data from x-ray diffraction a suitable metric is developed to evaluate the similarity (or dissimilarity) between samples and to compare it to a references. The methodology focuses on the d-lines and uses the intensity measurements indirectly in the algorithm. The resulting d-line distribution and summary statistics of the differences is used to establish whether a true differe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Powder Diffraction
سال: 2021
ISSN: ['1945-7413', '0885-7156']
DOI: https://doi.org/10.1017/s0885715621000580