化学
晶体结构
结构精修
六方晶系
结晶学
粉末衍射
Crystal(编程语言)
X射线晶体学
衍射
金属
离子
铅(地质)
矿物学
地质学
物理
有机化学
程序设计语言
光学
地貌学
计算机科学
作者
Sergio Brückner,Gigliola Lusvardi,Ledi Menabue,Monica Saladini
标识
DOI:10.1016/0020-1693(95)04636-n
摘要
The crystal structure of lead hydroxyapatite, Pb10(PO4)6(OH)2, is refined on powder XRD data using the Rietveld method. The unit cell is hexagonal, a=b=9.866(3) and c=7.426(2) Å, space group P63/m, Z=1 (relative to the specified formula). Results are discussed and compared with previous structures of hydroxyapatite and partially lead-substituted hydroxyatites. Now that the entire range of lead substitution is covered, it is possible to detect a coherent trend in the distortions of the crystal packing introduced by the different ability of the two metallic crystal sites to accommodate Pb ions.
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