磷酸双氧铀矿丝铀矿的拉曼光谱研究。
A Raman spectroscopic study of the uranyl phosphate mineral threadgoldite.
作者信息
Frost Ray L, Cejka Jirí, Weier Matt
机构信息
Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2006 Nov;65(3-4):797-801. doi: 10.1016/j.saa.2005.12.043. Epub 2006 Mar 10.
Raman spectra of threadgoldite at 298 and 77K are measured and interpreted for the first time. Bands related the (UO(2))(2+) and (PO(4))(3-) stretching and bending vibrations are tenatively attributed together with the bands assigned to the stretching a and bending vibrations of water molecules and hydroxyls. Hydrogen-bonding network and H(2)O and (OH)(-1) libration modes are mentioned. U-O bond lengths in uranyls are calculated via empirical relations R(U-O)=f[nu(1) and nu(3)(UO(2))(2+)]A. They are comparable to the values inferred from the single crystal structure analysis of threadgoldite.
首次测量并解释了298K和77K下丝磷铀矿的拉曼光谱。与（UO₂）²⁺和（PO₄）³⁻的伸缩振动和弯曲振动相关的谱带，以及归属于水分子和羟基的伸缩振动和弯曲振动的谱带，都被初步归属。文中提到了氢键网络以及H₂O和（OH）⁻的摆动模式。通过经验关系式R（U-O）=f[ν₁和ν₃（UO₂）²⁺]A计算了铀酰中的U-O键长。它们与从丝磷铀矿单晶结构分析推断出的值相当。
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