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Infrared Studies of Aragonite Calcite and Vaterite Type Structures in theBorates Carbonates and Nitrates

机译:the石方解石和球ate石类型结构的红外研究硼酸盐碳酸盐和硝酸盐

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摘要

Infrared absorption spectra have been obtained on the alkali nitrates, the divalent metalcarbonates, and the rare earth borates which assume the aragonite, calcite, or vateritecrystal structures. It was observed that similar structures give rise to analogous spectraexcept for the carbonate and borates having the vaterite structure. The marked differencesobserved in these latter spectra are discussed. Frequency shifts produced by cationsubstitution are ascribed to repulsion between closed electron shells of oxygen atoms. Itis concluded that this repulsive force determines the structure type in the rare earthborates.
机译:在碱金属硝酸盐(二价金属)上获得了红外吸收光谱碳酸盐和稀土硼酸盐,它们具有文石,方解石或球ate石晶体结构。观察到相似的结构产生相似的光谱具有球ate石结构的碳酸盐和硼酸盐除外。明显的差异讨论了在后面这些光谱中观察到的现象。阳离子产生的频移取代归因于氧原子的封闭电子壳之间的排斥。它结论是,这种排斥力决定了稀土的结构类型硼酸盐。

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