| People | Locations | Statistics |
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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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Buvaylo, Elena
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Topics
Publications (2/2 displayed)
- 2023New Low-Dimensional Organic–Inorganic Lead Halide Hybrid Systems Directed by Imidazo[1,5-a]pyridinium-Based Cation or Imines: Synthesis, Structures, Non-Covalent Interactions and Optical Propertiescitations
- 2022Ni<sup>II</sup> molecular complex with a tetradentate aminoguanidine-derived Schiff base ligand: structural, spectroscopic and electrochemical studies and photoelectric responsecitations
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article
Ni<sup>II</sup> molecular complex with a tetradentate aminoguanidine-derived Schiff base ligand: structural, spectroscopic and electrochemical studies and photoelectric response
Abstract
<jats:p>The new molecular nickel(II) complex, namely, {4-bromo-2-[({<jats:italic>N</jats:italic>′-[(2-oxidobenzylidene)amino]carbamimidoyl}imino)methyl]phenolato}nickel(II) <jats:italic>N</jats:italic>,<jats:italic>N</jats:italic>-dimethylformamide solvate monohydrate, [Ni(C<jats:sub>15</jats:sub>H<jats:sub>11</jats:sub>BrN<jats:sub>4</jats:sub>O<jats:sub>2</jats:sub>)]·C<jats:sub>3</jats:sub>H<jats:sub>7</jats:sub>NO·H<jats:sub>2</jats:sub>O, (I), crystallizes in the triclinic space group <jats:italic>P</jats:italic>{1} with one molecule per asymmetric unit. The guanidine ligand is a product of Schiff base condensation between aminoguanidine, salicylaldehyde and 5-bromosalicylaldehyde templated by Ni<jats:sup>2+</jats:sup> ions. The chelating ligand molecule is deprotonated at the phenol O atoms and coordinates the metal centre through the two azomethine N and two phenolate O atoms in a <jats:italic>cis</jats:italic>-NiN<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> square-planar configuration [average(Ni—N/O) = 1.8489 Å, <jats:italic>cis</jats:italic> angles in the range 83.08 (5)–95.35 (5)°, <jats:italic>trans</jats:italic> angles of 177.80 (5) and 178.29 (5)°]. The complex molecule adopts an almost planar conformation. In the crystal, a complicated hydrogen-bonded network is formed through N—H...N/O and O—H...O intermolecular interactions. Complex (I) was also characterized by FT–IR and <jats:sup>1</jats:sup>H NMR spectroscopy. It undergoes an Ni<jats:sup>II</jats:sup> ↔ Ni<jats:sup>III</jats:sup> redox reaction at <jats:italic>E</jats:italic><jats:sub>1/2</jats:sub> = +0.295 V (<jats:italic>vs</jats:italic> Ag/AgCl) in methanol solution. In a thin film with a free surface, complex (I) shows a fast photoelectric response upon exposure to visible light with a maximum photovoltage of ∼178 mV.</jats:p>