ChemInform Abstract: Crystal Structure, Physical Properties and Bond Valence Analysis of NaLuP2O7.

ChemInform ◽  
2014 ◽  
Vol 45 (28) ◽  
pp. no-no
Author(s):  
Anis Bejaoui ◽  
Karima Horchani-Naifer ◽  
Mounir Hajji ◽  
Mokhtar Ferid
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Bond Valence ◽  
Bond Valence Analysis

Crystal structure, physical properties and bond valence analysis of NaLuP2O7

2014 ◽  
Vol 31 ◽  
pp. 46-53 ◽  
Author(s):  
Anis Béjaoui ◽  
Karima Horchani-Naifer ◽  
Mounir Hajji ◽  
Mokhtar Férid
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Bond Valence ◽  
Bond Valence Analysis

Crystal Structure and Twinning of Rb3Mo14O22

2012 ◽  
Vol 194 ◽  
pp. 10-13
Author(s):  
Markus Hainz ◽  
Herbert Boller
Keyword(s):  
Crystal Structure ◽  
Structural Model ◽  
Close Packing ◽  
Bond Valence ◽  
Rubidium Atoms ◽  
Multiple Twinning ◽  
Bond Valence Analysis

Rb3Mo14O22 has been prepared and its crystal structure determined: S.G.: P21/c (No.14), a = 10.462(7), b = 9.414(2), c = 9.956(5) Ǻ, β = 103.73(2)°, Z = 2, R = 0.046. It is isotypic to K3Mo14O22. The crystal structure can be described as a substitutional derivative of a ccp close packing of oxygen and rubidium atoms with interspersed Mo14O34 units having a core of three trans-edge condensed molybdenum octahedra. The observed multiple twinning is explained by this structural model. A bond valence analysis is presented.

scholarly journals The crystal structure of cesbronite, Cu3TeO4(OH)4: a novel sheet tellurate topology

2018 ◽  
Vol 74 (1) ◽  
pp. 24-31 ◽  
Author(s):  
O. P. Missen ◽  
S. J. Mills ◽  
M. D. Welch ◽  
J. Spratt ◽  
M. S. Rumsey ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Bond Valence ◽  
Chemical Formula ◽  
Charge Balance ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
International Mineralogical Association ◽  
Average Structure ◽  
Bond Valence Analysis

The crystal structure of cesbronite has been determined using single-crystal X-ray diffraction and supported by electron-microprobe analysis, powder diffraction and Raman spectroscopy. Cesbronite is orthorhombic, space group Cmcm, with a = 2.93172 (16), b = 11.8414 (6), c = 8.6047 (4) Å and V = 298.72 (3) Å3. The chemical formula of cesbronite has been revised to CuII 3TeVIO4(OH)4 from CuII 5(TeIVO3)2(OH)6·2H2O. This change has been accepted by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association, Proposal 17-C. The previously reported oxidation state of tellurium has been shown to be incorrect; the crystal structure, bond valence studies and charge balance clearly show tellurium to be hexavalent. The crystal structure of cesbronite is formed from corrugated sheets of edge-sharing CuO6 and (Cu0.5Te0.5)O6 octahedra. The structure determined here is an average structure that has underlying ordering of Cu and Te at one of the two metal sites, designated as M, which has an occupancy Cu0.5Te0.5. This averaging probably arises from an absence of correlation between adjacent polyhedral sheets, as there are two different hydrogen-bonding configurations linking sheets that are related by a ½a offset. Randomised stacking of these two configurations results in the superposition of Cu and Te and leads to the Cu0.5Te0.5 occupancy of the M site in the average structure. Bond-valence analysis is used to choose the most probable Cu/Te ordering scheme and also to identify protonation sites (OH). The chosen ordering scheme and its associated OH sites are shown to be consistent with the revised chemical formula.

Zur Kristallchemie der Elemente: Schmelztemperatur, Atomvolumen, formale Wertigkeit und Bindungsvalenzen

1995 ◽  
Vol 210 (11) ◽  
Author(s):  
M. Trömel ◽  
H. Alig ◽  
L. Fink ◽  
J. Lösel
Keyword(s):  
Bond Valence ◽  
Group Number ◽  
Bond Valence Analysis

AbstractBond valence analysis has been performed on crystalline elements which occur in different modifications. For this purpose, the covalence of elements of main groups I to IV is set equal to group number

Crystallochemical analysis of the crystal structure of PbGa2S4: the bond valence model

2016 ◽  
Vol 39 (0) ◽  
pp. 7-11
Author(s):  
А. Я. Штейфан ◽  
В. І. Сідей ◽  
І. І. Небола ◽  
І. П. Студеняк
Keyword(s):  
Crystal Structure ◽  
Bond Valence ◽  
Bond Valence Model ◽  
Crystallochemical Analysis

scholarly journals Crystal structure and physical properties of Yb2In and Eu2−xYbxIn alloys

2020 ◽  
Vol 4 (10) ◽  
Author(s):  
F. Guillou ◽  
H. Yibole ◽  
R. Hamane ◽  
V. Hardy ◽  
Y. B. Sun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Physical Properties

scholarly journals Design, growth, and characterization of Y2Mo4O15 crystals for Raman laser applications

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 1164-1171
Author(s):  
Xiangmei Wang ◽  
Zeliang Gao ◽  
Chunyan Wang ◽  
Xiaojie Guo ◽  
Youxuan Sun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Raman Laser ◽  
Laser Applications ◽  
Potential Use

This work reports the crystal structure and physical properties of the Y2Mo4O15 crystal and its potential use in the Raman laser.

scholarly journals Effect of Electron Doping on the Crystal Structure and Physical Properties of an n = 3 Ruddlesden–Popper Compound La4Ni3O10

2021 ◽  
Author(s):  
Manimuthu Periyasamy ◽  
Lokanath Patra ◽  
Øystein S. Fjellvåg ◽  
Ponniah Ravindran ◽  
Magnus H. Sørby ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Electron Doping

Crystal Structure and Physical Properties of BiCoPO5

1999 ◽  
Vol 148 (2) ◽  
pp. 295-301 ◽  
Author(s):  
Said Nadir ◽  
J.S. Swinnea ◽  
H. Steinfink
Keyword(s):  
Crystal Structure ◽  
Physical Properties
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