Synthesis of the first Zn<sub>6</sub>-hexagon sandwich-tungstoantimonate <i>via</i> rearrangement of a non-lacunary Krebs-type polyoxotungstate
- Author(s)
- Elias Tanuhadi, Alexander Roller, Gerald Giester, Ioannis Kampatsikas, Annette Rompel
- Abstract
A novel synthetic pathway to obtain the first Zn
6 hexagon tungstoantimonate [(Zn(H
2O))
6(B-α-SbW
9O
33)
2]
6− ([Zn
6-α-SbW
9] (1)) via rearrangement of a non-lacunary Krebs-POM precursor (C
12N
4H
11)
4K
4[(Mn(H
2O)
3)
2((Mn
0.5W
0.5)O
2)
2(B-β-SbW
9O
33)
2] ([Mn-β-SbW
9]) has been developed. Addition of ortho-phenylenediamine (opda) in order to optimize the synthesis of [Mn-β-SbW
9] led to the crystallization of a novel Krebs-type Zn-POM (C
12N
4H
11)
4Na
5[((Zn
0
8W
0.2)(H
2O)
3)
2((Zn
0.2W
0.8)O
2)
2(B-β-SbW
9O
33)
2] ([(Zn/W)
2-β-SbW
9] (2)) comprising four disordered Zn-centers after replacement of MnCl
2 with ZnCl
2. The compounds were characterized in the solid state by single-crystal and powder X-ray diffraction (XRD), IR spectroscopy, thermogravimetric analysis (TGA) and elemental analysis and in solution by UV-vis spectroscopy and ESI-mass spectrometry. The Krebs-POM archetype and the Zn
6 hexagon tungstoantimonate have been investigated towards their interactions with Human Serum Albumin (HSA) as a model protein using SDS-PAGE and trypthophan fluorescence quenching.
- Organisation(s)
- Department of Biophysical Chemistry, Core Facility Crystal Structure Analysis, Department of Mineralogy and Crystallography
- Journal
- Dalton Transactions
- Volume
- 47
- Pages
- 15651-15655
- No. of pages
- 5
- ISSN
- 1477-9226
- DOI
- https://doi.org/10.1039/c8dt02787k
- Publication date
- 10-2018
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104004 Chemical biology, 104001 General chemistry, 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- Inorganic Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/ca6d01e7-e687-4d3a-8d5d-6cda0c22bd46