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- W2994702921 abstract "Two metal complexes (C7H7N2)[Cr(C2O4)2(H2O)2]·2H2O (1) and (C7H7N2)3 [Cr(C2O4)3](H2C2O4)·3H2O (2), have been synthesized by self-assembly of a benzimidazole ligand and oxalic acid anion with chromium (III) as metal. The complexes (1) and (2) were characterized by single crystal X-ray diffraction, TG analysis and spectroscopy techniques. The molecular structure of complexes (1) and (2) appear to be a modular associate consisting of a complex anion containing trivalent Cr as the central atom, a bridging hydrogen oxalate anion, a monoprotonated benzimidazole acting as the counter-cation and water molecules. The atomic arrangement of complexes (1) and (2) can be described as inorganic layers of anionic chromium complex and water molecules between which organic cations (C7H7N2)+ are located. The crystal packing of complexes (1) and (2) is ensured by extensive O–H⋯O and N–H⋯O hydrogen bonds. In addition, the magnetic properties of the complex (1) were determined in the range 1.8–300 K showing a very weak antiferromagnetic interactions between Cr(III) centers with a little contribution of ZFS effect. Moreover, complexes (1) and (2) exhibit significant degradation of methylene blue (MB) under sunlight irradiation." @default.
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- W2994702921 date "2020-04-01" @default.
- W2994702921 modified "2023-10-17" @default.
- W2994702921 title "A novel oxalate-based three dimensional polymorphs supramolecular compounds: Synthesis, spectroscopic characterization, magnetic and photocatalytic properties" @default.
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- W2994702921 doi "https://doi.org/10.1016/j.molstruc.2019.127573" @default.
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