Spectral Properties of Extracted Complexes of Metal Picrates with Crown Ethers

Abstract

Abstract: The investigation on UV-visible spectra of species formed by extracting some metal picrates with benzo-15-crown-5(B15C5) and dibenzo-18-crown-6(DB18C6) verified that there are some interactions of picrate anion with K⁺, Na⁺ and rare earth ions in loaded organic phase. By the study of the charge transfer band and absorption spectra of picrate anion, it can be determined whether an ion pair has been formed and either a 1 : 1 contact ion pair or a 1 : 2 crown-separated ion pair involved in organic phase can be distinguished for an ion-pair extraction.

Key words: UV-visible spectra, Crown ether, Extraction, Ion pair, Picrate

Zhang Xianxin, Zhou Zhixian . Spectral Properties of Extracted Complexes of Metal Picrates with Crown Ethers[J]. Chemical Research in Chinese Universities, 1989, 5(3): 224-230.

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Spectral Properties of Extracted Complexes of Metal Picrates with Crown Ethers

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