کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1310869 | 1499200 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis, characterization and pseudopolymorphism of a phenoxo-bridged binuclear manganese(III) Schiff base complex Synthesis, characterization and pseudopolymorphism of a phenoxo-bridged binuclear manganese(III) Schiff base complex](/preview/png/1310869.png)
Three pseudopolymorphs of a phenoxo-bridged binuclear manganese(III) complex, [Mn(L)(N3)]2 where L = [N,N′-bis(2-hydroxyacetophenylidene)]propane-1,2-diamine could be synthesized using same reactants but different solvents. The syntheses of the unsolvated isomer [Mn(L)(N3)]2 (1) and a hydrated isomer [Mn(L)(N3)]2·3.66H2O (2) have been achieved in acetone and methanol medium, respectively, while another previously reported complex [Mn(L)(N3)]2·2C2H5OH (3) was obtained from a mixed solvent containing ethanol. The pseudopolymorphs 1, 2 and 3 crystallize in the space groups P21/c, P21/n and P21/n, respectively. Their 3D supramolecular structures have been compared to notice that the molecular building blocks are held by weak intermolecular C–H⋯π, C–H⋯O or van der Waals interactions. While the compound 1 is an unsolvated pseudopolymorph, 2 and 3 contain water and ethanol, respectively as guest molecules in their lattices.
Syntheses, crystal and supramolecular structures of three pseudopolymorphs {[Mn(L)(N3)]2 (1), 1·water (2) and 1·ethanol (3) where L = [N,N′-bis(2-hydroxyacetophenylidene)]propane-1,2-diamine} comprising of the same phenoxo-bridged binuclear manganese(III) building block have been described.Figure optionsDownload as PowerPoint slideHighlights
► Binuclear phenoxo-bridged manganese(III) Schiff base complexes have been prepared.
► The complexes exhibit pseudopolymorphism.
► Solvent molecules serve as templates to induce formation of the solvated complexes.
► Host–guest supramolecular interactions are operative in the solid state.
Journal: Inorganica Chimica Acta - Volume 387, 30 May 2012, Pages 1–7