Structural investigations of the tetraborates MB4O7 (M = Pb, Sr, Ba)
Structural investigations of the tetraborates MB4O7 (M = Pb, Sr, Ba)
复制标题
四硼酸盐 MB4O7(M = Pb、Sr、Ba)的结构研究
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
M. Braden
中科院分区:
文献类型:
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作者:
W. Stein;J. Liebertz;P. Becker;L. Bohatý;M. Braden
The crystal structures of the tetraborates MB4O7 were investigated at room temperature for M = Sr, Pb, Ba and at 100 K for M = Pb, Ba. The influence of the lone electron pair of Pb2+ in PbB4O7 can be studied by comparing the isostructural compounds PbB4O7 and SrB4O7. The lone pair shows a clear displacement of the lead atom which increases upon cooling. In contrast with the Sr and Pb compounds, BaB4O7 crystallizes in a centrosymmetric structure. However, this structure seems to be on the border of stability, as we find strong internal stress.
影响因子:
3.5
作者:
J.S. Knyrim;S.R. Römer;W. Schnick;H. Huppertz
通讯作者:
H. Huppertz