The association and complexation equilibria in the system D-glucitol—nickel(II)—water
A joint study using polarimetry, spectrophotometry, and mathematical modeling revealed the formation of 1: 1, 2: 1, and 4: 4 outer-sphere complexes of nickel(II) ions with neutral D -glucitol (H 6 Glc-ol), viz., {[Ni(H 2 O) n ]•(H 6 Glc-ol)aq} 2 +, {[Ni(H 2 O) n ] 2 •(H 6 Glc-ol)aq} 4+ , and {[Ni(H...
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| Veröffentlicht in: | Russian chemical bulletin 2010-08, Vol.59 (8), p.1594-1599 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A joint study using polarimetry, spectrophotometry, and mathematical modeling revealed the formation of 1: 1, 2: 1, and 4: 4 outer-sphere complexes of nickel(II) ions with neutral
D
-glucitol (H
6
Glc-ol), viz., {[Ni(H
2
O)
n
]•(H
6
Glc-ol)aq}
2
+, {[Ni(H
2
O)
n
]
2
•(H
6
Glc-ol)aq}
4+
, and {[Ni(H
2
O)
n
]
4
•[(H
6
Glc-ol)aq]
4
}
8+
in a weakly acidic medium. In aqueous solutions, D-glucitol forms tetramers. For each form, the constant of formation and the specific optical rotation was calculated. |
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| ISSN: | 1066-5285 1573-9171 |
| DOI: | 10.1007/s11172-010-0282-1 |