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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Toliński, Tomasz
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Publications (3/3 displayed)
- 2019Structure, magnetic and catalytic properties of SiO2-MFe2O4 (M = Mn, Co, Ni, Cu) nanocomposites and their syntheses by a modified sol–gel methodcitations
- 2011Magnetostructural transformations in Ni <inf>51</inf> Mn <inf>36</inf> Sn <inf>13</inf> Heusler alloy thin filmscitations
- 2009Variety of polymorphic forms contrasted with uniform crystal packing in sparteine ML<inf>2</inf> complexes: Crystal structure, spectroscopic and magnetic properties of (-)-α-isosparteine and (-)-sparteine complexes with CuBr<inf>2</inf>citations
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article
Variety of polymorphic forms contrasted with uniform crystal packing in sparteine ML<inf>2</inf> complexes: Crystal structure, spectroscopic and magnetic properties of (-)-α-isosparteine and (-)-sparteine complexes with CuBr<inf>2</inf>
Abstract
<p>This paper reports the synthesis, thermogravimetric and magnetic measurements for (-)-α-isosparteine CuBr<sub>2</sub> complex (1) and the existence of the fourth polymorph (2) of (-)-sparteine CuBr<sub>2</sub> complex. The two CuBr<sub>2</sub> complexes have been structurally characterized by X-ray crystallography. A diverse supramolecular aggregation of (-)-sparteine CuBr<sub>2</sub> complex has been contrasted with strong tendency for isostructuralism observed in a series of ML<sub>2</sub> complexes (M = metal, L = halogen or pseudohalogen) with both sparteine (3) and α-isosparteine (4). The incidence of polymorphism in a group of compounds which readily form the isomorphic series is quite unusual. Moreover, the reported crystal structure of 2 constitutes the first example showing that the organization of metal complexes of sparteine isomers into similar packing architecture is possible, although in general configurational changes within the sparteine ligand differentiate packing of otherwise similar (-)-sparteine-ML<sub>2</sub> or (-)-α-isosparteine-ML<sub>2</sub> molecules. © 2009 Elsevier B.V. All rights reserved.</p>