Ionic Crystals [M3O(OOCC6H5)6(H2O)3]4[α-SiW12O40] (M = Cr, Fe) as Heterogeneous Catalysts for Pinacol Rearrangement

Ionic Crystals [M3O(OOCC6H5)6(H2O)3]4[α-SiW12O40] (M = Cr, Fe) as Heterogeneous Catalysts for Pinacol Rearrangement

Complexation of trinuclear oxo-centered carboxylates with a silicododecatungstate resulted in the formation of ionic crystals of [M3O(OOCC6H5)6(H2O)3]4[α-SiW12O40]·nH2O·mCH3C­OCH3 [M = Cr (Ia), Fe (IIa)]. Treatments of Ia and IIa at 373 K in vacuo formed guest-free phases Ib and IIb, respectively. C...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Inorganic chemistry 2012-01, Vol.51 (2), p.775-777
Hauptverfasser: Uchida, Sayaka, Lesbani, Aldes, Ogasawara, Yoshiyuki, Mizuno, Noritaka
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Complexation of trinuclear oxo-centered carboxylates with a silicododecatungstate resulted in the formation of ionic crystals of [M3O(OOCC6H5)6(H2O)3]4[α-SiW12O40]·nH2O·mCH3C­OCH3 [M = Cr (Ia), Fe (IIa)]. Treatments of Ia and IIa at 373 K in vacuo formed guest-free phases Ib and IIb, respectively. Compounds Ib and IIb heterogeneously catalyzed the pinacol rearrangement to pinacolone with high conversion at 373 K, and the catalysis is suggested to proceed size selectively in the solid bulk.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic2025186