利顿石 K2Ca2Cu(SO4)4·2H2O 的硫酸盐矿物的振动光谱特征及其分子结构的意义。
Vibrational spectroscopic characterization of the sulphate mineral leightonite K2Ca2Cu(SO4)4·2H2O--implications for the molecular structure.
机构信息
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane Queensland 4001, Australia.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Aug;112:90-4. doi: 10.1016/j.saa.2013.04.030. Epub 2013 Apr 11.
The mineral leightonite, a rare sulphate mineral of formula K2Ca2Cu(SO4)4·2H2O, has been studied using a combination of electron probe and vibrational spectroscopy. The mineral is characterized by an intense Raman band at 991 cm(-1) attributed to the SO4(2-) ν1 symmetric stretching mode. A series of Raman bands at 1047, 1120, 1137, 1163 and 1177 cm(-1) assigned to the SO4(2-) ν3 antisymmetric stretching modes. The observation of multiple bands shows that the symmetry of the sulphate anion is reduced. Multiple Raman and infrared bands in the OH stretching region shows that water in the structure of leightonite is in a range of molecular environments.
本文采用电子探针和振动光谱学相结合的方法研究了矿物雷顿石，其化学式为 K2Ca2Cu(SO4)4·2H2O，是一种罕见的硫酸盐矿物。该矿物的特征是在 991 cm(-1)处有一个强烈的拉曼带，归因于 SO4(2-) ν1 对称伸缩模式。在 1047、1120、1137、1163 和 1177 cm(-1)处有一系列拉曼带，归因于 SO4(2-) ν3 反对称伸缩模式。观察到多个带表明硫酸盐阴离子的对称性降低。在 OH 伸缩区域的多个拉曼和红外带表明，雷顿石结构中的水处于多种分子环境中。
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