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Complex formation between polyols and rare earth cations. The crystal structure of galactitol · 2PrCl3 · 14 H2O

✍ Scribed by Stephen J. Angyal; Donald C. Craig

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
607 KB
Volume
241
Category
Article
ISSN
0008-6215

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✦ Synopsis

Alditols form stronger complexes with Nd3+, Sm3+, and Eu3+ than with La3+ cations, but weaker ones with the higher lanthanides.

There is a clear relationship between ionic radii and stability constants. Chromatographic ion-exchange columns can be smaller when prepared with Nd3* rather than the usual Ca*+ columns. Galactitol, alone amongst the hexitols, can form 1:2 complexes with lanthanide ions. The crystal structure of galactitol.2PrC1,.

14H,O has been determined. * Complexes of Carbohydrates with Metal Cations, Part XVII. For Part XVI, see ref. 1.

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✍ Mathias S. Wickleder 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 German ⚖ 181 KB 👁 2 views

Single crystals of Lu(ClO 4 ) 3 ´3 H 2 O were obtained by slow dehydration of Lu(ClO 4 ) 3 ´6 H 2 O at 140 °C under flowing argon. The compound crystallizes in the triclinic crystal system (P1, Z = 2, a = 750.3(1), b = 838.4(1), c = 1054.6(2) pm, a = 79.77(2)°, b = 79.18(2), c = 63.83(2), R all = 0.