Etude comparative des hydro- et deuteroaluminates de lithium LiAlH4 et LiAlD4 II - Spectres de diffusion raman des composes solides
Etude comparative des hydro- et deuteroaluminates de lithium LiAlH4 et LiAlD4 II - Spectres de diffusion raman des composes solides
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LiAlH4 和 LiAlD4 II 锂氢铝酸盐与氘铝酸盐的比较实验研究 - 组成固体的扩散拉曼光谱
DOI：
10.1016/0025-5408(85)90088-1
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
Hassan Eddaoudi
中科院分区：
文献类型：
--
作者：
J. Bureau;B. Bonnetot;P. Claudy;Hassan Eddaoudi
研究了四氢铝酸锂(LiAlH4)和四氢铝酸锂(LiAlD4)的室温拉曼光谱。观察到了内振动模和晶格模。由于LiAlH4-α的晶体结构尚未完全确定，因此进行了部分振动分析。用氚作为光谱探针，建立了激振声子模和平移声子模之间的分离。对新的LiAlD4-α‘形式的拉曼光谱进行了分析。他们证实了LiAlD4-α‘在65℃左右不可逆转变为众所周知的LiAlD4-α形式。
The Raman spectra of lithium tetrahydroaluminate (LiAlH4) and tetradeuteroaluminate (LiAlD4) in their room pressure phases have been investigated at room temperature. Internal vibrational modes as well as lattice modes have been observed. As the cristallographic structure of LiAlH4-α is not fully determined, a partial vibrational analysis has been performed. Using deuteration as a spectroscopic probe, the separation between librational and translational phonon modes has been established. Raman spectra of the new LiAlD4-α′ form have been analysed. They have confirmed the irreversible transformation of LiAlD4-α′ into the well known LiAlD4- α form, at ca.65°C.