Abstract
It is well known that anhydrous lithium nitrate, LiNO<sub>3</sub>, is one of the lithium salts which contain LiO<sub>6</sub> octahedra in their crystal structures. By considering the <sup>6</sup>Li-<sup>7</sup>Li isotopic effects, Tarte reported the Li—O infrared bands for many inorganic lithium salts and suggested that the LiO<sub>6</sub> valence frequencies are expected below 300 cm<sup>−1</sup>, in the region which was not studied. The Raman and infrared spectra of crystalline LiNO<sub>3</sub> have been reported by various authors for the compounds with natural abundance only, and the Li—O modes assigned to the infrared bands at about 320 and 280 cm<sup>−1</sup> This assignment has been confirmed by the normal coordinate analysis.
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