Effects of Side-Chain Substituents in Benzo-15-Crown-5 on Lithium Extraction

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 (NO 2 B15C5), 4′- tert -butyl-benzo-15-crown-5 (TBB15C5), and 4′-acetyl-benzo-15-crown-5 (AcB15C5). Extraction is...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2018, Vol.63 (1), p.121-127
Main Authors: Demin, S. V., Shokurova, N. A., Demina, L. I., Kuz’mina, L. G., Zhilov, V. I., Tsivadze, A. Yu
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chloroform
Ethers
Infrared spectroscopy
Inorganic Chemistry
Lithium
Physical Chemistry of Solutions
Single crystals
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Summary: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 (NO 2 B15C5), 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, NO 2 B15C5, AcB15C5, and B15C5. The complexes LiN15C5H 2 OClO 4 ( 1 ), LiN15C5H 2 OI ( 2 ), LiNO 2 B15C5H 2 OI ( 3 ), LiAcB15C5H 2 OI ( 4 ), and LiTBB15C5H 2 OI ( 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 .
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023618010059