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首页> 外文期刊>Materials Chemistry and Physics >Raman and infrared spectral analysis of corrosion products on zinc NaZn_4Cl(OH)_6SO_4·6H_2O and Zn_4Cl_2(OH)_4SO_4·5H_2O
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Raman and infrared spectral analysis of corrosion products on zinc NaZn_4Cl(OH)_6SO_4·6H_2O and Zn_4Cl_2(OH)_4SO_4·5H_2O

机译：NaZn_4Cl（OH）_6SO_4·6H_2O和Zn_4Cl_2（OH）_4SO_4·5H_2O上腐蚀产物的拉曼光谱和红外光谱分析

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摘要

Two corrosion products of zinc namely NaZn_4Cl(OH)_6SO_4·6H_2O which occurs mainly in marine and traffic environments and Zn_4Cl_2(OH)_4SO_4·5H_2O which occurs in industrial, rural and urban environments were analysed using infrared and Raman spectroscopic methods and the vibrational modes of SO_4~(2-) ion, OH radical and H_2O molecules have been identified and discussed. The symmetric stretching vibrations of the SO_4~(2-) ion of the compounds give an indication of the distorted structure for the SO_4 anion in the compounds, the distortion being more in Zn_4Cl_2(OH)_4SO_4·5H_2O. Due to the presence of strong hydrogen bond network, an unusual lowering of the symmetric stretching mode of SO_4 is observed in both the compounds. In NaZn_4Cl(OH)_6SO_4·6H_2O, medium to weak hydrogen bonding network is present while strong to weak hydrogen bonding is present in Zn_4Cl_2(OH)_4SO_4·5H_2O.
机译：使用红外和拉曼光谱法以及振动模式分析了锌的两种腐蚀产物，分别是主要发生在海洋和交通环境中的NaZn_4Cl（OH）_6SO_4·6H_2O和发生在工业，乡村和城市环境中的Zn_4Cl_2（OH）_4SO_4·5H_2O。对SO_4〜（2-）离子，OH自由基和H_2O分子的识别和讨论。化合物中SO_4〜（2-）离子的对称拉伸振动表明了化合物中SO_4阴离子的结构发生了扭曲，其中Zn_4Cl_2（OH）_4SO_4·5H_2O的扭曲更大。由于存在强大的氢键网络，在两种化合物中均观察到SO_4对称拉伸模式的异常降低。在NaZn_4Cl（OH）_6SO_4·6H_2O中，存在中等至弱氢键网络，而Zn_4Cl_2（OH）_4SO_4·5H_2O中存在强至弱氢键。

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