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A vibrational spectroscopic study of the silicate mineral plumbophyllite Pb_2Si_4O_(10)·H_2O

机译:硅酸盐矿物质纤维素PB_2SI_4O_(10)·H_2O的振动光谱研究

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摘要

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 (SiO_3)_n units. A very intense Raman band at 643 cm~(-1) is assigned to the bending mode of (SiO_3)_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.
机译:共同用红外光谱分子的拉曼光谱已经用于研究普伦齐莱矿物的矿物质的分子结构。 拉曼光谱由1027cm〜(-1)的非常强烈的尖峰为主,分配给SiO拉伸振动(SiO_3)_N单元。 在643cm〜(-1)处的一个非常强烈的拉曼带被分配给(SiO_3)_N单元的弯曲模式。 在3215,3443,3470,3494和3567cm〜(-1)中观察到的拉曼带分配给水拉伸振动。 观察到多个水拉伸和弯曲模式表明水和硅酸盐表面之间的氢键合的变化很大。 由于普伦齐勒石结构和植物体的结构紧密相似,因此制备了具有特征的光谱的比较。 通过使用振动光谱,已经进行了临床分子结构的评估。

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