Molecular and crystal structure of dextrans: a combined electron and x-ray diffraction study. 1. The anhydrous, high-temperature polymorph

1984 ◽  
Vol 17 (1) ◽  
pp. 100-107 ◽  
Author(s):  
C. Guizard ◽  
H. Chanzy ◽  
Anatole Sarko
2020 ◽  
Vol 846 ◽  
pp. 155696
Author(s):  
Sylvain Le Tonquesse ◽  
Christopher Hassam ◽  
Yuichi Michiue ◽  
Yoshitaka Matsushita ◽  
Mathieu Pasturel ◽  
...  

2018 ◽  
Vol 18 (6) ◽  
pp. 3558-3568 ◽  
Author(s):  
Jennifer T. J. Freitas ◽  
Cristiane C. de Melo ◽  
Olímpia M. M. S. Viana ◽  
Fabio F. Ferreira ◽  
Antonio C. Doriguetto

1971 ◽  
Vol 4 (4) ◽  
pp. 293-297 ◽  
Author(s):  
C. J. Toussaint

A crystallographic study of the system Ni2+ 1−2x Ni3+ x Li+ x O has been carried out. The crystal structure of the material in the range 0≤x≤0.4 at room temperature and up to 1000°C has been studied. The principal coefficients of thermal expansion and the phase diagram are given. The structural rhombohedral → face-centred cubic transition temperature of NiO has been determined.


2017 ◽  
Vol 111 (6) ◽  
pp. 843-851
Author(s):  
Andrey A. Zolotarev ◽  
Elena S. Zhitova ◽  
Faina A. Gabdrakhmanova ◽  
Maria G. Krzhizhanovskaya ◽  
Anatoly A. Zolotarev ◽  
...  

2021 ◽  
Vol 861 ◽  
pp. 158562
Author(s):  
A.S. Rogachev ◽  
D.Yu. Kovalev ◽  
N.A. Kochetov ◽  
A.S. Shchukin ◽  
S.G. Vadchenko

1993 ◽  
Vol 48 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Michael Schneider ◽  
Peter Kuske ◽  
Heinz Dieter Lutz

The crystal structures of the fast ionic conductors Li6MgBr8 and Li2MgBr4 oC 14 and cF 56 were determined by single crystal X -ray diffraction and neutron powder studies, respectively. At ambient temperature, Li6MBr8 (M = Mg, Mn) crystallize in a Suzuki-type structure (space group Fm3̄̄̄ m , Z = 4, Li6MgBr8: a = 1098.0(1) pm, 114 unique reflections, R = 0.037). Li2MgBr4 oC 14 crystallizes in a SnMn2S4-type structure (space group Cmmm , Z = 2, a = 777.94(2), b = 1104.25(4), and c = 386.55(1) pm , RI, = 0.073, 318 K), the high-temperature polymorph (HTM I) in the Li2MnBr4 cF 56 type (space group Fd 3 m , Z = 8, a = 1124.55(4) pm , RI , = 0.052, 673 K). These structure types are more or less ordered NaCl superstructures. The thermal ellipsoids of the lithium ions are discussed in terms of the conduction pathways and the order-disorder phase transitions observed.


Sign in / Sign up

Export Citation Format

Share Document