𝔖 Bobbio Scriptorium
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Reversible Topotactic Hydration and Dehydration of an Europium Complex [1]

✍ Scribed by Ulli Englert; Beate Ganter; Trixie Wagner; Wolfgang Kläui

Publisher
John Wiley and Sons
Year
1998
Tongue
German
Weight
133 KB
Volume
624
Category
Article
ISSN
0372-7874

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✦ Synopsis

Solid samples of the salt [Eu〈L OEt 〉 2 (H 2 O) 2 ]BF 4 , (〈L OEt 〉 = [CoCp{P(OEt) 2 O} 3 ]) may be reversibly dehydrated under very mild conditions to give the corresponding mono aqua complex [Eu〈L OEt 〉 2 (H 2 O)]BF 4 . The conversion can be monitored by single crystal x-ray diffraction. In the course of the reaction the crystallinity of the substance is retained: both compounds crystallize in space group P2 1 /c with similar lattice constants and essentially the same packing arrange-ment. The cations show the expected change in the Eu coordination geometry with longer metal-ligand distances for the higher coordinated Eu atoms in the diaqua complex. The crystalline-state reaction is facilitated by a suitable morphology.

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