Ternary complexes of Al~(3+) and F~- with a third ligand

R. Bruce Martin

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Ternary complexes of Al~(3+) and F~- with a third ligand

机译：Al〜（3+）和F〜-与第三配体的三元配合物

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Al~(3+) binds fluoride more strongly than sixty other metal ions. Binary stability constants are recommended for four ionic strengths from 0.0 to 0.5 M. Ternary complexes with hydroxide become important in neutral solutions. Competition between fluoride and hydroxide occurs for scarce sites on a metal ion highly chelated by a ligand such as EDTA. Under the conditions of experiments with G-proteins, the main solution species are hexacoordinate (H_2O)_2(HO)AlF_3~- at pH 7.5 and hexacoordinate (H_2O)_2AlF_4~- at pH 6.0. Crystal structure determinations show that on a G-protein a β-phosphate oxygen substitutes for a water molecule on the species in solution.

机译：Al〜（3+）与六十种其他金属离子的结合更牢固。对于从0.0到0.5 M的四种离子强度，建议使用二元稳定性常数。与氢氧化物的三元络合物在中性溶液中变得很重要。氟化物与氢氧化物之间的竞争发生在金属离子上稀少的位点上，该位点被配体（如EDTA）高度螯合。在G蛋白实验条件下，主要溶液种类为pH 7.5的六配位（H_2O）_2（HO）AlF_3〜-和pH 6.0的六配位（H_2O）_2AlF_4〜-。晶体结构测定表明，在G蛋白上，β-磷酸氧替代了溶液中物种的水分子。

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来源
《Coordination chemistry reviews》 |1996年第1996期|p.23-32|共10页
作者
R. Bruce Martin;
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作者单位

Chemistry Department, University of Virginia, Charlottesville, VA 22903, USA;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类无机化学;
关键词
ternary complexes; Al~(3+); F~-; G-protein;

机译：三元配合物;Al〜（3 +）;F〜-;G蛋白;

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Ternary complexes of Al~(3+) and F~- with a third ligand

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