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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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| 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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Rosa, V.
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- 2022RoBDEMAT: A risk of bias tool and guideline to support reporting of pre-clinical dental materials research and assessment of systematic reviews.citations
- 2018Imine ligands based on ferrocene: Synthesis, structural and Mössbauer characterization and evaluation as chromogenic and electrochemical sensors for Hg2+citations
- 2015Reactivity of TCNE and TCNQ derivatives of quinonoid zwitterions with Cu(I)citations
- 2014Copper(ii) complexes of bis(aryl-imino)acenaphthene ligandscitations
- 2012New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methodscitations
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article
Copper(ii) complexes of bis(aryl-imino)acenaphthene ligands
Abstract
<p>Two new Ar-BIAN Cu(ii) complexes (where Ar-BIAN = bis(aryl-imino) acenaphthene) of formulations [CuCl<sub>2</sub>(Mes-BIAN)] (1) (Mes = 2,4,6-Me<sub>3</sub>C<sub>6</sub>H<sub>2</sub>) and [CuCl<sub>2</sub>(Dipp-BIAN) ] (2) (Dipp = 2,6-iPr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>) were synthesised by direct reaction of CuCl<sub>2</sub> suspended in dichloromethane with the respective ligands Mes-BIAN (L1) and Dipp-BIAN (L2), dissolved in dichloromethane, under an argon atmosphere. Attempts to obtain these compounds by solubilising CuCl<sub>2</sub> in methanol and adding a dichloromethane solution of the corresponding ligand, under aerobic conditions, gave also compound 1, but, in the case of L2, the Cu(i) dimer [CuCl(Dipp-BIAN)] <sub>2</sub> (3) was obtained instead of compound 2. The compounds were fully characterised by elemental analyses, MALDI-TOF mass spectrometry, FT-IR, <sup>1</sup>H NMR and EPR spectroscopic techniques. The solid-state molecular structures of compounds 1-3 were determined by single crystal X-ray diffraction, showing the expected chelation of the Ar-BIAN ligands and two chloride ligands completing the coordination sphere of the Cu(ii) centre. In the case of the complex 1, an intermediate coordination geometry around the Cu(ii) centre, between square planar and tetrahedral, was revealed, while the complex 2 showed an almost square planar geometry. The structural differences and evaluation of energetic changes were rationalised by DFT calculations. Analysis of the electrochemical behaviour of complexes 1-3 was performed by cyclic voltammetry and the experimental redox potentials for Cu(ii)/Cu(i) pairs have been compared with theoretical values calculated by DFT in the gas phase and in dichloromethane and methanol solutions. The complex 1 exhibited good activity in the reverse atom transfer radical polymerisation (ATRP) of styrene. This journal is</p>