INFRARED AND RAMAN-SPECTRA OF MOO3 MOLYBDENUM TRIOXIDES AND MOO3-CENTER-DOT-XH(2)O MOLYBDENUM TRIOXIDE HYDRATES
INFRARED AND RAMAN-SPECTRA OF MOO3 MOLYBDENUM TRIOXIDES AND MOO3-CENTER-DOT-XH(2)O MOLYBDENUM TRIOXIDE HYDRATES
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DOI：
10.1016/0584-8539(94)00247-9
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发表时间：
1995-07-01
影响因子：
4.4
通讯作者：
LASSEGUES, JC
中科院分区：
文献类型：
--
作者：
SEGUIN, L;FIGLARZ, M;LASSEGUES, JC
测定了MoO_3(正交和单斜晶系)和MoO_3粉末样品的红外和拉曼光谱。XH(2)O(x=1/3，1/2，1和2)已被记录，并参考现有的结构数据和以前的振动归属讨论了最特征频率。定性地给出了氧原子与一个、两个或三个钼原子相连的单元的伸缩振动的基团频率，并建立了键长与伸缩力常数之间的关系.对于水合物，部分氚化能确定水分子的对称性.特征氢键距离是根据孤立的HOD伸缩振动的频率来评估的。
The infrared and Raman spectra of powder samples of MoO3 (orthorhombic and monoclinic) and of MoO3 . xH(2)O (x = 1/3, 1/2, 1 and 2) have been recorded and the most characteristic frequencies are discussed with reference to the available structural data and to previous vibrational assignments. A qualitative assignment is given in terms of group frequencies for the stretching vibrations of units involving oxygen atoms linked to one, two or three molybdenum atoms and a correlation is established between bond length and stretching force constant.In the case of the hydrates, partial deuteration allows the symmetry of the water molecules to be determined. Characteristic hydrogen bond distances are evaluated from the frequencies of the isolated HOD stretching vibrations.