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Dr. Masooma Ibrahim

Project Leader
Polyoxometalate-Based Molecular Magnets
Research Unit: Cluster Chemistry
Room: 0-451
Phone: 0721/608-28920
masooma ibrahimXev5∂kit edu

Karlsruhe Institute of Technology (KIT)
Institute of Nanotechnology
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen, Germany



GZ: IB 123/1-1


1.    Synthesis, Magnetism, and Electrochemistry of the Ni14- and Ni5-Containing Heteropolytungstates [Ni14(OH)6(H2O)10(HPO4)4(P2W15O56)4]34- and [Ni5(OH)4(H2O)4(β-GeW9O34)(β-GeW8O30(OH))]13-: Ibrahim, M.; Xiang, Y.; Bassil, B. S.; Lan, Y.; Powell, A. K.; de Oliveira, P.; Keita, B.; Kortz, U. Inorg. Chem.   2013, 52, 8399-8408. [Read Online]. 

2.    Polyoxometalates as potent inhibitors for acetyl and butyrylcholinesterases and as potential drugs for the treatment of Alzheimer’s disease: Iqbal, J.; Barsukova-Stuckart, M.; Ibrahim, M.; Usman Ali, S.; Ahmed Khan, A.; Kortz, U. Med. Chem. Res. 2013, 22, 1224-1228. [Read Online] 

3.    Polyoxometalates as Potent and Selective Inhibitors of Alkaline Phosphatases with Profound Anticancer and Amoebicidal Activities: Raza, R.; Matin, A.; Sarwar, S.; Barsukova-Stuckart, M.; Ibrahim, M.; Kortz, U.; Iqbal, J. Dalton Trans. 2012, 41, 14329-14336. . [Read Online]. 

4.    Redox Switching of Polyoxometalate-Methylene Blue based Layer-by-Layer Films: Anwar, N.; Vagin, M.; Naseer, R.; Imar, S.; Ibrahim, M.; Mal, S. S.; Kortz, U.; Lafir, F.; McCormac, T. Langmuir 201228, 5480-5488. [Read Online].

5.    Anomalous permeation of the [P5W30O110]15- polyoxoanion in polyelectrolyte multilayer films: Ladam, G.; Toniazzo, V.; Ruch, D.; Atmani, H.; Ibrahim, M.; Kortz, U.; Ball, V. RSC Advances 2012, 2, 3700-3707. [Read Online] 

6.    Planar {Mn19(OH)12}26+ Assembly Incorporated in 60-Tungsto-6-Silicate Polyanion: Bassil, B. S.; Ibrahim, M.; Al-Oweini, R.; Asano, M.; Wang, Z.; van Tol, J.; Dalal, N. S.; Choi, K.-Y.; Ngo Biboum, R.; Keita, B.; Nadjo, L.; Kortz, U. Angew. Chem. Int. Ed. 2011, 50, 5961-5964. [Read Online]. 

7.    Hexadeca-Cobalt(II) Containing Polyoxometalate-Based Single-Molecule Magnet: Ibrahim, M.; Lan, Y.; Bassil, B. S.; Xiang, Y.; Suchopar, A.; Powell, A. K.; Kortz, U. Angew. Chem. Int. Ed. 2011, 50, 4708-4711. [Read Online].

8.   Yttrium(III)-containing tungstoantimonate(III) stabilized by capping, tetrahedral WO42- unit, [{Y(α-SbW9O31(OH)2)(CH3COO)(H2O)}3(WO4)]17-: Ibrahim, M.; Mal, S. S.; Bassil, B. S.; Banerjee, A.; Kortz, U. Inorg. Chem. 2011, 50, 956-960. [Read Online]

 9     The Wheel-Shaped Cu20-Tungstophosphate [Cu20X(OH)24(H2O)12(P8W48O184)]25- Ion (X = Cl, Br, I) and the Role of the Halide Guest: Mal, S. S.; Bassil, B. S.; Ibrahim, M.; Nellutla, S.; van Tol, J.; Dalal, N. S.; Fernández, J. A.; López, X.; Poblet, J. M.; Ngo Biboum, R.; Keita, B.; Kortz, U. Inorg. Chem. 2009, 48, 11636-11645. [Read Online]

10.  Large Cation-Anion Materials Based on Trinuclear Ruthenium(III) Salts of Keggin and Wells-Dawson Anions Having Water-Filled Channels : Ibrahim, M.; Dickman, M. H.; Suchopar, A.; Kortz, U.   Inorg. Chem. 2009, 48, 1649-1654. [Read Online]


Research Area: Polyoxometalate-Based Molecular Magnets

Polyoxometalates (POMs) are a remarkable class of inorganic compounds with enormous structural and compositional diversity and potential applications in various fields such as catalysis, analytical chemistry, magnetism, nanotechnology, and medicine.Lacunary POMs are usually considered as diamagnetic, inorganic multidentate ligands that can encapsulate a large number of spin-coupled magnetic centers (d- or f-block), usually bridged via μ2-oxo/hydroxo/aqua groups metal-oxo clusters. In addition, the diamagnetic tungsten-oxo capping fragments isolate the respective 3d or 4f magnetic clusters so well from each other that intermolecular interactions are usually negligible in most cases. This means these molecules are particularly suitable for the detailed study of the nature of magnetic exchange interactions between paramagnetic centers.In the course of this work we aim to develop a novel, simple and one-pot synthetic strategy for the preparation ofheterometallic 3d–4f SMMs based on Polyoxometalates. It is worth mentioning that we will work exclusively with air-stable, mostly water soluble, hydrolytically stable, and inexpensive inorganic ligands. Indeed we are proposing an environmentally benign approach to synthesize magnetic materials with potential SMM behavior.


[{Co4(OH)3PO4}4(PW9O34)4]28- (Co16) and its magnetic studies

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[Ni14(OH)6(H2O)10(HPO4)4(P2W15O56)4]34- (Ni14) [Ni5(OH)4(H2O)4(β-GeW9O34)(β-GeW8O30(OH))]13– (Ni5) and their magnetic studies

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