Please use this identifier to cite or link to this item: https://scholarhub.balamand.edu.lb/handle/uob/1808
Title: Cr(III)-substituted heteropoly-16-tungstates [Cr(III)2(B-β-X(IV)W8O31)2](14-) (X = Si, Ge)
Authors: Liu, Wenging
Oweini, Rami Al
Meadows, Karen
Bassil, Bassem 
Lin, Zhengguo
Christian, Jonathan H.
Dalal, Naresh S.
Bossoh, A.M
Mbomekallé, I.M
De Oliveira, P
Iqbal, Jamshed
Kortz, Ulrich
Affiliations: Department of Chemistry 
Issue Date: 2016
Part of: Journal of inorganic chemistry
Volume: 55
Issue: 21
Start page: 10936
End page: 10946
Abstract: 
The dichromium(III)-containing heteropoly-16-tungstates [CrIII2(B-β-SiIVW8O31)2]14– (1) and [CrIII2(B-β-GeIVW8O31)2]14– (2) were prepared via a one-pot reaction of the composing elements in aqueous, basic medium. Polyanions 1 and 2 represent the first examples of CrIII-containing heteropolytungstates comprising the octatungstate unit {XW8O31} (X = Si, Ge). Magnetic studies demonstrated that, in the solid state, the two polyanions exhibit a weak antiferromagnetic interaction between the two CrIII centers with J = −3.5 ± 0.5 cm−1, with no long-range ordering down to 1.8 K. The ground-state spin of polyanions 1 and 2 was thus deduced to be 0, but the detection of a complex set of EPR signals implies that there are thermally accessible excited states containing unpaired spins resulting from the two S = 3/2 CrIII ions. A comprehensive electrochemistry study on 1 and 2 in solution was performed, and biological tests showed that both polyanions display significant antidiabetic and anticancer activities.
URI: https://scholarhub.balamand.edu.lb/handle/uob/1808
Type: Journal Article
Appears in Collections:Department of Chemistry

Show full item record

Record view(s)

11
checked on Dec 1, 2022

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.