Single crystal neutron diffraction
نویسندگان
چکیده
منابع مشابه
Single - crystal neutron diffraction study of b - Cs 3 ( HSO
The structure of -Cs3(HSO4)2[H2ÿx(SxP1ÿx)O4] has been examined by single-crystal neutron diffraction at 15 K. The compound crystallizes in space group C2/c and contains four formula units in the unit cell, with lattice parameters a = 19.769 (9), b = 7.685 (2), c = 8.858 (3) AÊ and = 100.60 (4) . Re®nement of P, S and H site occupancies indicated that the value of x (in the stoichiometry) is 0.5...
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The first neutron diffraction study of a single crystal containing uranyl peroxide nanoclusters is reported for pyrophosphate-functionalized Na44K6[(UO2)24(O2)24(P2O7)12][IO3]2·140H2O (1). Relative to earlier X-ray studies, neutron diffraction provides superior information concerning the positions of H atoms and lighter counterions. Hydrogen positions have been assigned and reveal an extensive ...
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Single-crystal neutron-diffraction data, collected at 10 K on a natural sample of diopside, provided a structure that refined to R = 4.5% for 415 independent reflections. The structure refinement showed significant reduction of the M(2)–O(3C2),(3D2) bond lengths, resulting in a more regular M(2) polyhedron than at higher temperatures. A significant zero-point contribution to the atomic displace...
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The crystal structures of natural F-bearing chondrodite [Mg4.64Fe0.28Mn0.014Ti0.023(Si1.01O4)2 F1.02OH0.97] from the Tilley Foster mine (Brewster, New York), F-bearing titanian clinohumite [Mg8.805Fe0.006Ti0.214(Si0.993O4)4F0.484OH0.516] from Kukh-i-Lal (Tadjikistan) and F-free titanian hydroxylclinohumite [Mg7.378Fe1.12Mn0.052Ni0.014Ti0.453(Si0.996O4)4OH1.0] from Val Malenco (Italy) were refin...
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Ringwoodite [(Mg,Fe)2SiO4 spinel] has been considered as one of the most important host minerals of water in the Earth’s deep mantle. Its extensive hydration was observed in high-pressure synthesis experiments and also by its natural occurrence. Water can dissolve into ringwoodite as structurally bound hydrogen cations by substituting other cations, although the hydrogen site and its occupancy ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2007
ISSN: 0108-7673
DOI: 10.1107/s0108767307095098