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L. I. Demina L. G. Kuz’mina S. V. Demin N. A. Shokurova V. I. Zhilov A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2017,62(11):1536-1543
The complex formation of lithium with benzo-15-crown-5 (B15C5) was investigated. The complexes LiB15C5H2OX, where X = Cl? (1), I? (2), (3), (5), and LiBF4B15C5 (4) were synthesized and studied by IR spectroscopy. Complexes 1–4 were examined by X-ray diffraction. According to IR spectroscopy data, the crown ether conformation changes upon dissolution. The interaction of the extracted complex with the solvent was identified. 相似文献
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S. V. Demin N. A. Shokurova L. I. Demina L. G. Kuz’mina V. I. Zhilov A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2018,63(1):121-127
Chloroform–water extraction systems have been studied using crown-ethers as extracting agents, namely: benzo-15-crown-5 (B15C5), 2,3-naphtho-15-crown-5 (N15C5), 4′-nitro-benzo-15-crown-5 (NO2B15C5), 4′-tert-butyl-benzo-15-crown-5 (TBB15C5), and 4′-acetyl-benzo-15-crown-5 (AcB15C5). Extraction isotherms of these systems have been obtained, and an attempt made to elucidate the effect of the structure of extracting agent on extraction characteristics. IR-spectroscopic studies have been performed for selected crown-ethers and their complexes in crystalline form and in chloroform solutions, namely, for N15C5, NO2B15C5, AcB15C5, and B15C5. The complexes LiN15C5H2OClO4 (1), LiN15C5H2OI (2), LiNO2B15C5H2OI (3), LiAcB15C5H2OI (4), and LiTBB15C5H2OI (5) have been isolated for the first time and characterized by IR spectroscopy. Single-crystal X-ray data have been obtained for complexes 1–3. 相似文献
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N. A. Shokurova L. I. Demina V. I. Zhilov S. V. Demin A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2016,61(6):787-790
Extraction characteristics of chloroform–water system in lithium iodide extraction with benzo-15-crown-5 (B15C5) were studied. The complexation of the crown ether with LiI in organic phase was shown by IR spectroscopy. Isotope effect multiplication was performed by extraction chromatography technique. The magnitude of isotope separation factor (α) for 6Li-7Li pair was 1.017. The light lithium isotope is concentrated in organic phase. 相似文献
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Kostikova G. V. Maltseva I. E. Krasnova O. G. Shokurova N. A. Zhilov V. I. 《Russian Chemical Bulletin》2018,67(12):2188-2190
Russian Chemical Bulletin - The extraction behavior of Na and K during lithium isotope separation using benzo-15-crown-5 (B15C5) in chloroform as the extractant was investigated. It was found that... 相似文献
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L. G. Kuz’mina L. I. Demina S. V. Demin N. A. Shokurova V. I. Zhilov A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2018,63(3):357-360
The complex formation of lithium thiocyanate with benzo-15-crown-5 (B15C5) was studied. The possibility of formation of both anhydrous and crystal water-containing complexes was demonstrated. The complexes LiB15C5NCS and LiB15C5H2ONCS were synthesized and characterized by X-ray diffraction and IR spectroscopy. 相似文献
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