STUDY OF AN AL(III) COMPLEX WITH THE PLANT DYE BRAZILEIN FROM CEASALPINIA SAPPAN LINN AL(III) COMPLEX WITH BRAZILEIN FROM CEASALPINIA SAPPAN LINN

被引：0
|
作者：
Wongsooksin, Kamonchanok [1 ]
Rattanaphani, Saowanee [1 ]
Tangsathit-Kulchai, Malee [1 ]
Rattanaphani, Vichitr [1 ]
Bremner, John Barnard [2 ]
机构：
[1] Suranaree Univ Technol, Sch Chem, Inst Sci, Nakhon Ratchasima 30000, Thailand
[2] Univ Wollongong, Sch Chem, Wollongong, NSW 2522, Australia
来源：
SURANAREE JOURNAL OF SCIENCE AND TECHNOLOGY | 2008年 / 15卷 / 02期
关键词：
brazilein; spectrophotometry; complexation; alum;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The structure of the complex formed between Al(III) (alum) and brazilein in aqueous solution was investigated using UV-visible spectroscopy. The molar ratio method and Job's method of continuous variation were applied to ascertain the stoichiometric composition of the complex in aqueous solution. A 1:2 complex was indicated by both methods. A structure for Al(brazilein)(2) was proposed and the calculated heat of formation of this complex, obtained by the semiempirical PM3 method, indicated that the proposed complex was a reasonable one energetically.
引用
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页码：159 / 165
页数：7
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