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Synthesis, protonation constants of a series of triazamacrocycle methylenephosphonic acids

✍ Scribed by Jinzhang Gao; Hui He; Wu Yang; JingGuo Hou; Jingwan Kang

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 134 KB
Volume: 10
Category: Article
ISSN: 0895-7533
DOI: 10.1002/(sici)1098-2728(1998)10:4<229::aid-lra5>3.0.co;2-6

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✦ Synopsis

The protonation properties of the four polyamino polymethylenephosphonic acids are investigated by means of potentiometric titration in aqueous medium at 25 ‫ע‬ 0.1ЊC and an ionic strength I ‫ס‬ 0.1 mol•L ‫1מ‬ KNO 3 . The successive protonation constants of ligands are obtained separately. The results show that the size of the ligands' cavity play an important role in their proton-

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