Frost Ray L, López Andrés, Xi Yunfei, Scholz Ricardo, Lana Cristiano
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jul 15;128:665-70. doi: 10.1016/j.saa.2014.02.181. Epub 2014 Mar 12.
Raman spectroscopy complimented with infrared spectroscopy has been used to study the molecular structure of the mineral of plumbophyllite. The Raman spectrum is dominated by a very intense sharp peak at 1027 cm(-1), assigned to the SiO stretching vibrations of (SiO3)n units. A very intense Raman band at 643 cm(-1) is assigned to the bending mode of (SiO3)n units. Raman bands observed at 3215, 3443, 3470, 3494 and 3567 cm(-1) are assigned to water stretching vibrations. Multiple water stretching and bending modes are observed showing that there is much variation in hydrogen bonding between water and the silicate surfaces. Because of the close similarity in the structure of plumbophyllite and apophyllite, a comparison of the spectra with that of apophyllites is made. By using vibrational spectroscopy an assessment of the molecular structure of plumbophyllite has been made.
拉曼光谱与红外光谱相结合已被用于研究斜硅铅矿矿物的分子结构。拉曼光谱的特征是在1027 cm(-1)处有一个非常强烈的尖锐峰，归因于(SiO3)n单元的Si-O拉伸振动。在643 cm(-1)处有一个非常强烈的拉曼带，归因于(SiO3)n单元的弯曲模式。在3215、3443、3470、3494和3567 cm(-1)处观察到的拉曼带归因于水的拉伸振动。观察到多个水的拉伸和弯曲模式，表明水与硅酸盐表面之间的氢键存在很大差异。由于斜硅铅矿和鱼眼石的结构非常相似，因此将光谱与鱼眼石的光谱进行了比较。通过使用振动光谱对斜硅铅矿的分子结构进行了评估。
