引用本文:
周稚仙, 杜晨霞, 周宗华, 郁开北, 周忠远. 冠醚萃取苦味酸钪与配合物的晶体结构研究[J]. 应用化学,
1993, 10(6): 31-34.
Citation: Zhou Zhixian, Du Chenxia, Zhou Zonghua, Yu Kaibei, Zhou Zhongyuan. EXTRACTION OF SCANDIUM PICRATE BY CROWN ETHER AND CRYSTAL STRUCTURE OF BENZO-15-CROWN-5 PICRATE COMPLEX[J]. Chinese Journal of Applied Chemistry, 1993, 10(6): 31-34.
Citation: Zhou Zhixian, Du Chenxia, Zhou Zonghua, Yu Kaibei, Zhou Zhongyuan. EXTRACTION OF SCANDIUM PICRATE BY CROWN ETHER AND CRYSTAL STRUCTURE OF BENZO-15-CROWN-5 PICRATE COMPLEX[J]. Chinese Journal of Applied Chemistry, 1993, 10(6): 31-34.
冠醚萃取苦味酸钪与配合物的晶体结构研究
English
EXTRACTION OF SCANDIUM PICRATE BY CROWN ETHER AND CRYSTAL STRUCTURE OF BENZO-15-CROWN-5 PICRATE COMPLEX
Abstract:
The extraction of scandium picrate by benzo-15-crown-5 (B15C5) and dibenzo-18-crown-6(DB18C6) has been studied. The compositions of the extracts have been determined by the slope analysis method as Sc(B15C5)1.5(OH)(Pi)2 and Sc(DB18C6)(OH)(Pi)2(Pi=pi-crate ion) with apparent extraction equilibrium constants logKex=5.69 and 3.59 (25℃), respectively. The crystal of the Sc(B15C5)Pi3·2H2O·CH3CN belongs to triclinic system,space group P1, a=1.2678(2), b=1.3764(3), c=1.9440(4)nm, α=81.03(2)°, β=70.88 (1)°, γ=70.71(2)°, Z=2. The mechanism of the extraction has been elucidated.
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Key words:
- scandium picrate
- / crown ether
- / extraction
- / crystal structure
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