Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon

Todea AM, Al-Karawi AJM, Glaser T, Walleck S, Chamoreau L-M, Thouvenot R, Gouzerh P, Müller A (2012)
Inorganica Chimica Acta 389: 107-111.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Upon standing in air at room temperature, acidified aqueous solutions (pH 2) obtained by dissolving sodium molybdate, iron(II) chloride, acetic acid and potassium dodecatungstoborate led to the formation of greenish thin plate crystals (1) containing discrete clusters. Upon drying 1 at room temperature cross-linking of the clusters occurs in a solid-state reaction which leads to compound 2. Based on crystallographic studies of 1 and on extensive physical characterization (vibrational, NMR, Mossbauer spectra and magnetic susceptibility measurements) of 2, it was shown that compounds 1 and 2 contain reduced spherical {Mo72Fe30} Keplerate-type shells encapsulating non-reduced tungstoborate Keggin-type anions. The properties and structures of these compounds are compared to related hybrid structures containing in principle easier reducible molybdophosphate or molybdosilicate cores. According to the results the present type of encapsulation can be considered as a general phenomenon. (C) 2012 Elsevier B.V. All rights reserved.
Stichworte
Keggin ions; Core-shell clusters; Host-guest chemistry; Keplerate
Erscheinungsjahr
2012
Zeitschriftentitel
Inorganica Chimica Acta
Band
389
Seite(n)
107-111
ISSN
0020-1693
Page URI
https://pub.uni-bielefeld.de/record/2509888

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Todea AM, Al-Karawi AJM, Glaser T, et al. Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon. Inorganica Chimica Acta. 2012;389:107-111.
Todea, A. M., Al-Karawi, A. J. M., Glaser, T., Walleck, S., Chamoreau, L. - M., Thouvenot, R., Gouzerh, P., et al. (2012). Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon. Inorganica Chimica Acta, 389, 107-111. doi:10.1016/j.ica.2012.01.062
Todea, A. M., Al-Karawi, A. J. M., Glaser, T., Walleck, S., Chamoreau, L. - M., Thouvenot, R., Gouzerh, P., and Müller, A. (2012). Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon. Inorganica Chimica Acta 389, 107-111.
Todea, A.M., et al., 2012. Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon. Inorganica Chimica Acta, 389, p 107-111.
A.M. Todea, et al., “Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon”, Inorganica Chimica Acta, vol. 389, 2012, pp. 107-111.
Todea, A.M., Al-Karawi, A.J.M., Glaser, T., Walleck, S., Chamoreau, L.-M., Thouvenot, R., Gouzerh, P., Müller, A.: Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon. Inorganica Chimica Acta. 389, 107-111 (2012).
Todea, Ana Maria, Al-Karawi, Ahmed Jasim M., Glaser, Thorsten, Walleck, Stephan, Chamoreau, Lise-Marie, Thouvenot, Rene, Gouzerh, Pierre, and Müller, Achim. “Encapsulation of Keggin-type anions in reduced molybdenum-iron-type Keplerates as a general phenomenon”. Inorganica Chimica Acta 389 (2012): 107-111.