A variable-temperature neutron diffraction study of ussingite; a strong asymmetric hydrogen bond in an aluminosilicate framework
A variable-temperature neutron diffraction study of ussingite; a strong asymmetric hydrogen bond in an aluminosilicate framework
复制标题
三钠锰矿的变温中子衍射研究；
DOI：
10.1007/s00269-012-0501-4
复制
发表时间：
2012
影响因子：
1.4
通讯作者：
Williams E
中科院分区：
文献类型：
--
作者：
Williams E
A powder neutron diffraction study of ussingite, Na2AlSi3O8(OH), over the temperature range 4–850 K has been undertaken. The strong hydrogen bond that exists in this mineral has been accurately determined with the O–H distance at 1.070(8) Å and an O(donor)–O(acceptor) separation of 2.481(5) Å at 4 K, The distribution of hydrogen along the O–O direction remains asymmetric between 4 and 850 K with the H atom being fully ordered at a single site, rather than partially disordered over two sites of a double-potential well, as in serandite. A gradual increase in the bonded O–H distance at higher temperatures is observed, indicative of a broadening of the potential well in which the hydrogen atom is sited. Below 50 K, the material shows negative thermal expansion, likely to be associated with reduced bending motion of the O–H bond.
登录
查看更多内容
影响因子：
6
作者：
Hideki Tanaka
通讯作者：
Hideki Tanaka
D2B，一种新型高分辨率中子粉末衍射仪
DOI：
10.1107/s0108767384089327
发表时间：
1984
期刊：
Acta Crystallographica Section A
影响因子：
--
作者：
A. Hewat;S. Heathman
通讯作者：
S. Heathman
通过粉末中子衍射细化天然球粒陨石中的氢位置：对硅镁石矿物稳定性的影响
影响因子：
2.7
作者：
A. Berry;M. James
通讯作者：
M. James
DOI：
10.1039/c39910000592
发表时间：
1991
期刊：
Journal of The Chemical Society, Chemical Communications
影响因子：
--
作者：
P. Barrie;L. Gladden;J. Klinowski
通讯作者：
J. Klinowski
DOI：
10.1524/zkri.1915.54.1.120
发表时间：
2000
期刊：
Zeitschrift für Kristallographie - Crystalline Materials
影响因子：
--
作者：
Ο. Β. Böggild
通讯作者：
Ο. Β. Böggild