Search Results - "Fischer, Reinhard X"

Mullite: Crystal Structure and Related Properties by Schneider, Hartmut, Fischer, Reinhard X., Schreuer, Jürgen

“…Mullite is certainly one of the most important oxide materials for both conventional and advanced ceramics. Mullite belongs to the compositional series of…”
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Crystal chemistry and properties of mullite-type Bi2M4O9: An overview by Schneider, Hartmut, Fischer, Reinhard X., Gesing, Thorsten M., Schreuer, Jürgen, Mühlberg, Manfred

“…Bi ( = Al , Ga , Fe ) belongs to the family of mullite-type crystal structures. The phases are orthorhombic with the space group Pbam. The backbones of the…”
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The Floppiness of It All: Bond Lengths Change with Atomic Displacement Parameters and the Flexibility of Various Coordination Tetrahedra in Zeolitic Frameworks. An Empirical Structural Study of Bond Lengths and Angles by Baur, Werner H, Fischer, Reinhard X

“…We have evaluated more than 7000 crystal structures of zeolites in terms of the values of their bond-lengths T–O (T = Si, Al, P, Zn, Be, Ge, B, As, Ga, Co) and…”
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Mullite and mullite-type crystal structures by Fischer, Reinhard X., Gaede-Köhler, Andrea, Birkenstock, Johannes, Schneider, Hartmut

“…Synthetic mullites (Al Si ) belong to one of the most important groups of ceramic materials. Their crystal structure consists of chains of edge-sharing AlO…”
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A historical note on the sodalite framework: The contribution of Frans Maurits Jaeger by Baur, Werner H., Fischer, Reinhard X.

“…It is pointed out that it was Frans Maurits Jaeger who was the first scientist to determine the crystal structure of a zeolite. It was the structure of nosean,…”
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The flexibility of the T–X–T hinges between the coordination tetrahedra in various zeolitic frameworks: an empirical structural study by Baur, Werner H., Fischer, Reinhard X.

“…In recent years, a large number of precisely determined crystal structure determinations of zeolites, that is compounds based on open frameworks of…”
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Entrapment of PMMA Polymer Strands in Micro- and Mesoporous Materials by Moller, Karin, Bein, Thomas, Fischer, Reinhard X

“…The synthesis of host−guest composites consisting of entrapped strands of poly(methylmethacrylate) (PMMA) within the pores of inorganic hosts is described…”
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Investigation of the clay fraction (<2 µm) of the Clay Minerals Society reference clays by Vogt, Christoph, Lauterjung, Jörn, Fischer, Reinhard X

“…We studied a set of 15 reference clays from The Clay Minerals Society (CMS) Source Clays repository. Our aim was to use them as reference materials in our…”
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Empirical electronic polarizabilities for use in refractive index measurements; III, Structures with short [5]Ti-O and vanadyl bonds by Shannon, Robert D, Fischer, Reinhard X

“…The electronic polarizabilities of most cations, such as Na+, Ca2+, Fe2+, Fe3+, and Zr4+, show a monotonic decrease as the cation coordination increases…”
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Correlation between optical constants and crystal chemical parameters of ZrW2O8 by SHANNON, Robert D, FISCHER, Reinhard X, MEDENBACH, Olaf, BOUSQUET, Eric, GHOSEZ, Philippe

“…The refractive indices of ZrW2O8, measured at wavelengths of 435.8-643.8 nm, were used to calculate n(D) at lambda = 589.3 nm and n(infinity) at lambda =…”
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On the occasion of the 100th anniversary of Josef Zemann’s birthday: a tribute to his scientific oeuvre by Giester, Gerald, Armbruster, Thomas, Balić-Žunić, Tonci, Beran, Anton, Effenberger, Herta, Fischer, Reinhard X., Friese, Karen, Libowitzky, Eugen, Wildner, Manfred, Nasdala, Lutz

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Gladstone–Dale compatibility, electronic polarizability and vibrational spectroscopy of minerals and inorganic compounds with V4+O and V4+O2 vanadyl groups by Chukanov, Nikita V., Fischer, Reinhard X., Kazheva, Olga N., Aksenov, Sergey M.

“…VO and VO2 vanadyl groups with short (typically 1.57–1.68 Å), essentially covalent, V—O bonds are common for V4+‐bearing oxysalts with [5]‐ and [6]‐coordinated…”
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Gladstone-Dale compatibility, electronic polarizability and vibrational spectroscopy of minerals and inorganic compounds with V 4+ O and V 4+ O 2 vanadyl groups by Chukanov, Nikita V, Fischer, Reinhard X, Kazheva, Olga N, Aksenov, Sergey M

“…VO and VO vanadyl groups with short (typically 1.57-1.68 Å), essentially covalent, V-O bonds are common for V -bearing oxysalts with [5]- and [6]-coordinated…”
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Refinement of the crystal structure of fresnoite, Ba2TiSi2O8, from Löhley (Eifel district, Germany); Gladstone–Dale compatibility, electronic polarizability and vibrational spectroscopy of minerals and inorganic compounds with pentacoordinated TiIV and a titanyl bond by Chukanov, Nikita V., Kazheva, Olga N., Fischer, Reinhard X., Aksenov, Sergey M.

“…Most known compounds with five‐coordinated Ti4+ are natural and synthetic titanosilicates. The crystal structure of natural fresnoite, Ba2TiSi2O8 [tetragonal,…”
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Refinement of the crystal structure of fresnoite, Ba 2 TiSi 2 O 8 , from Löhley (Eifel district, Germany); Gladstone-Dale compatibility, electronic polarizability and vibrational spectroscopy of minerals and inorganic compounds with pentacoordinated Ti IV and a titanyl bond by Chukanov, Nikita V, Kazheva, Olga N, Fischer, Reinhard X, Aksenov, Sergey M

“…Most known compounds with five-coordinated Ti are natural and synthetic titanosilicates. The crystal structure of natural fresnoite, Ba TiSi O [tetragonal,…”
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Determination of the H2O content in minerals, especially zeolites, from their refractive indices based on mean electronic polarizabilities of cations by Fischer, Reinhard X, Burianek, Manfred, Shannon, Robert D

“…It is shown here that the H2O content of hydrous minerals can be determined from their mean refractive indices with high accuracy. This is especially important…”
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Temperature-dependent structural studies of mullite-type Bi2Fe4O9 by Murshed, M. Mangir, Nénert, Gwilherm, Burianek, Manfred, Robben, Lars, Mühlberg, Manfred, Schneider, Hartmut, Fischer, Reinhard X., Gesing, Thorsten M.

“…We report on the temperature-dependent structural studies on the mullite-type Bi2Fe4O9 compound. The crystal structures were determined using both powder X-ray…”
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Empirical electronic polarizabilities: deviations from the additivity rule. I. M2+SO4·nH2O, blödite Na2M2+(SO4)2·4H2O, and kieserite-related minerals with sterically strained structures by Gagné, Olivier, Hawthorne, Frank, Shannon, Robert D., Fischer, Reinhard X.

“…Empirical electronic polarizabilities allow the prediction of total mineral polarizabilities and mean refractive indices of the vast majority of minerals and…”
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Corrigendum to “Natural mullites: chemical composition, crystal structure, and optical properties” published in Eur. J. Mineral., 31, 353–367, 2019 by Lenz, Stephan, Birkenstock, Johannes, Fischer, Lennart A., Schüller, Willi, Schneider, Hartmut, Fischer, Reinhard X.

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Mullite-2c – a natural polytype of mullite by Lenz, Stephan, Birkenstock, Johannes, Fischer, Lennart A, Schneider, Hartmut, Fischer, Reinhard X

“…A single crystal (∼ 20 µm × 20 µm × 330 µm) of mullite-2c, a natural polytype of mullite, was separated from a radially grown cluster of acicular crystals from…”
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