| 四磷酸镧系希土钾盐的红外光谱和拉曼光谱 |
| INFRARED AND RAMAN SPECTRA OF POTASSIUM RARE EARTH TETRAPHOSPHATES |
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| 摘要: 观测了十三个四磷酸镧系希土钾盐(KPm(PO3)4 和kLu(PO)3)4除外)和四磷酸钇钾的红外和拉曼光谱.利用基团频率对振动谱带进行了归属.发现了α结构与β结构间的光谱差异,与X射线衍射的结果一致.可用于区分两种晶型.观察到了磷酸根伸缩振动、变角振动和Ln-O伸缩振动频率随希土离子原子序数的增加而增加,及Ln-O伸缩频率随希土离子总角动量变化呈类似“斜W”效应的规率. |
| 关键词: 红外光谱 拉曼光谱 希土磷酸盐 |
| 基金项目: 中国科学院科学基金 |
| Abstract: The infrared and Raman spectra of crystalline powders of 13 potassium rare earth tetraphosphates(with the exception of KPm(PO3)4and KLu(PO3)4)and potassium yttrium tetraphosphate have been obtained. The assignments of the vibrational frequencies have been made in a way based on their structures and group frequencies. The difference between a and β crystalline forms has been found in both IR and Raman spectra, which is in agreement with the X-ray diffraction results. The increase in frequencies of O-P-O stretching, O-P-O bending and Ln-O stretching with increasing atomic numbers of rare earth ions and the "inclined W" effect which is the variation of Ln-O stretching frequencies with the total angular momen-tums of the ions have been observed. |
| Keywords: IR spectra Raman spectra rare earth phosphate |
| 投稿时间：1989-03-22 |
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| 周宇清,兰淑琴,席时权,洪广言,赵国俭,曾广赋.四磷酸镧系希土钾盐的红外光谱和拉曼光谱[J].无机化学学报,1991,7(4):384-388. |
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