scholarly journals Low temperature molecular crystal structure by high resolution neutron powder diffraction

1993 ◽  
Vol 49 (s1) ◽  
pp. c430-c430
Author(s):  
R. M. Ibberson
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Low Temperature ◽  
Powder Diffraction ◽  
Molecular Crystal ◽  
Neutron Powder Diffraction

Crystal structure of high-performance thermoelectric materials by high resolution neutron powder diffraction

2018 ◽  
Vol 551 ◽  
pp. 64-68 ◽  
Author(s):  
Peng Wu ◽  
Yoshihisa Ishikawa ◽  
Masato Hagihala ◽  
Sanghyun Lee ◽  
Kunling Peng ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Powder Diffraction ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Neutron Powder Diffraction

scholarly journals Structure analysis on small molecular crystal by high resolution neutron powder diffraction

2014 ◽  
Vol 502 ◽  
pp. 012055 ◽  
Author(s):  
P Miao ◽  
S Torii ◽  
M Yonemura ◽  
Y Ishikawa ◽  
J Zhang ◽  
...  
Keyword(s):  
High Resolution ◽  
Structure Analysis ◽  
Powder Diffraction ◽  
Molecular Crystal ◽  
Neutron Powder Diffraction

The ab initio crystal structure determination of vapour-deposited methyl fluoride by high-resolution neutron powder diffraction

1996 ◽  
Vol 52 (5) ◽  
pp. 892-895 ◽  
Author(s):  
R. M. Ibberson ◽  
M. Prager
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Ab Initio ◽  
Bond Length ◽  
Powder Diffraction ◽  
Structure Refinement ◽  
Neutron Powder Diffraction ◽  
Methyl Halides ◽  
Methyl Fluoride ◽  
Neutron Powder Diffraction Data

The crystal structure of methyl fluoride (m.p. = 131 K, b.p. = 195 K) at 5 K has been solved ab initio from high-resolution neutron powder diffraction data. A good quality powder sample was produced using a vapour deposition technique and enabled an accurate and precise structure refinement to be carried out; the C—F bond length is 1.399 (4) Å, and the average C—D bond length is 1.070 (4) Å. The monoclinic structure may be described in terms of dipole-dipole intermolecular interactions and is distinct from the structures of the other methyl halides.

The low-temperature behaviour of analcime. 1: high-resolution neutron powder diffraction

1996 ◽  
Vol 60 (400) ◽  
pp. 499-507 ◽  
Author(s):  
C. M. B. Line ◽  
M. T. Dove ◽  
K. S. Knight ◽  
B. Winkler
Keyword(s):  
Phase Transitions ◽  
High Resolution ◽  
Low Temperature ◽  
Powder Diffraction ◽  
Low Temperatures ◽  
Neutron Powder Diffraction ◽  
Water Molecules ◽  
Temperature Behaviour ◽  
Synthetic Sample ◽  
Sodium Cations

AbstractThe structure of a synthetic sample of analcime has been determined as a function of temperature between 30–300 K by high-resolution neutron powder diffraction. Although there are some reports of samples of analcime having non-cubic structures, the sample in our experiments remained cubic (space group la3d), and hence disordered, down to low temperatures. The absence of phase transitions involving ordering of the orientations of the water molecules, ordering of the sodium positions, or a displacive instability as in leucite and related materials, is discussed. We speculate that part of the reason for the absence of ordering of the water molecules or sodium cations is associated with the Al/Si disorder, which cannot order at low temperatures. We also discuss the likely distribution of the orientations of the water molecules at low temperatures, and propose that the water diads lie close to any of the crystal diads with the H-H Vectors lying close to the triads.

Pressure Dependence Investigation of the Low-Temperature Structure of TlAu(CN)2by High-Resolution Neutron Powder Diffraction and Optical Studies

1997 ◽  
Vol 36 (13) ◽  
pp. 2791-2794 ◽  
Author(s):  
Peter Fischer ◽  
Joël Mesot ◽  
Brian Lucas ◽  
Andreas Ludi ◽  
Howard Patterson ◽  
...  
Keyword(s):  
High Resolution ◽  
Low Temperature ◽  
Powder Diffraction ◽  
Pressure Dependence ◽  
Neutron Powder Diffraction ◽  
Temperature Structure ◽  
Optical Studies
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