Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy
This study examines the influence of ligand design on the structural, optical, and electrical properties of copper-based coordination complexes. Ligands H<sub>2</sub>L<sup>1</sup> and H<sub>2</sub>L<sup>2</sup> were synthesized via the reaction of 5-ni...
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2024-12-01
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| author | Jana Pisk Marko Dunatov Martina Stojić Nenad Judaš Ivica Đilović Marta Razum Luka Pavić |
| author_facet | Jana Pisk Marko Dunatov Martina Stojić Nenad Judaš Ivica Đilović Marta Razum Luka Pavić |
| author_sort | Jana Pisk |
| collection | DOAJ |
| description | This study examines the influence of ligand design on the structural, optical, and electrical properties of copper-based coordination complexes. Ligands H<sub>2</sub>L<sup>1</sup> and H<sub>2</sub>L<sup>2</sup> were synthesized via the reaction of 5-nitrosalicylaldehyde with 2-hydroxy- or 4-hydroxybenzhydrazide. H<sub>4</sub>L<sup>3</sup> was obtained from the reaction of carbohydrazide and salicylaldehyde, while H<sub>4</sub>L<sup>4</sup> was prepared by condensing 4-methoxysalicylaldehyde with thiocarbohydrazide. The research focuses on two key design elements: (1) the effect of hydroxyl group positioning on the aroyl ring in hydrazide ligands (H<sub>2</sub>L<sup>1</sup> vs. H<sub>2</sub>L<sup>2</sup>) and (2) the impact of carbonyl versus thiocarbonyl groups and aldehyde substituents in hydrazone ligands (H<sub>4</sub>L<sup>3</sup> vs. H<sub>4</sub>L<sup>4</sup>). The resulting complexes, [Cu<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>], [Cu<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>(MeOH)<sub>3</sub>], [Cu<sub>2</sub>(L<sup>3</sup>)(H<sub>2</sub>O)<sub>2</sub>], and [Cu<sub>2</sub>(L<sup>4</sup>)(H<sub>2</sub>O)<sub>2</sub>], were synthesized and characterized using attenuated total reflectance infrared (IR-ATR) spectroscopy, thermogravimetric analysis (TG), and UV-Vis diffuse reflectance spectroscopy. Their electrical properties were investigated using solid-state impedance spectroscopy (IS). The crystal and molecular structure of the complex [Cu<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>(MeOH)<sub>3</sub>]∙MeOH was determined by single-crystal X-ray diffraction (SCXRD). This study underscores the pivotal role of ligand modifications in modulating the functional properties of coordination complexes, offering valuable insights for the advancement of materials chemistry. |
| format | Article |
| id | doaj-art-43eda99df2e5480198ad5555c7b64316 |
| institution | DOAJ |
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| language | English |
| publishDate | 2024-12-01 |
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| spelling | doaj-art-43eda99df2e5480198ad5555c7b643162025-08-20T02:47:13ZengMDPI AGMolecules1420-30492024-12-013018210.3390/molecules30010082Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance SpectroscopyJana Pisk0Marko Dunatov1Martina Stojić2Nenad Judaš3Ivica Đilović4Marta Razum5Luka Pavić6Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, CroatiaRuđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, CroatiaDepartment of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, CroatiaDepartment of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, CroatiaDepartment of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, CroatiaRuđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, CroatiaRuđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, CroatiaThis study examines the influence of ligand design on the structural, optical, and electrical properties of copper-based coordination complexes. Ligands H<sub>2</sub>L<sup>1</sup> and H<sub>2</sub>L<sup>2</sup> were synthesized via the reaction of 5-nitrosalicylaldehyde with 2-hydroxy- or 4-hydroxybenzhydrazide. H<sub>4</sub>L<sup>3</sup> was obtained from the reaction of carbohydrazide and salicylaldehyde, while H<sub>4</sub>L<sup>4</sup> was prepared by condensing 4-methoxysalicylaldehyde with thiocarbohydrazide. The research focuses on two key design elements: (1) the effect of hydroxyl group positioning on the aroyl ring in hydrazide ligands (H<sub>2</sub>L<sup>1</sup> vs. H<sub>2</sub>L<sup>2</sup>) and (2) the impact of carbonyl versus thiocarbonyl groups and aldehyde substituents in hydrazone ligands (H<sub>4</sub>L<sup>3</sup> vs. H<sub>4</sub>L<sup>4</sup>). The resulting complexes, [Cu<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>], [Cu<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>(MeOH)<sub>3</sub>], [Cu<sub>2</sub>(L<sup>3</sup>)(H<sub>2</sub>O)<sub>2</sub>], and [Cu<sub>2</sub>(L<sup>4</sup>)(H<sub>2</sub>O)<sub>2</sub>], were synthesized and characterized using attenuated total reflectance infrared (IR-ATR) spectroscopy, thermogravimetric analysis (TG), and UV-Vis diffuse reflectance spectroscopy. Their electrical properties were investigated using solid-state impedance spectroscopy (IS). The crystal and molecular structure of the complex [Cu<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>(MeOH)<sub>3</sub>]∙MeOH was determined by single-crystal X-ray diffraction (SCXRD). This study underscores the pivotal role of ligand modifications in modulating the functional properties of coordination complexes, offering valuable insights for the advancement of materials chemistry.https://www.mdpi.com/1420-3049/30/1/82copper complexes(thio)carbohydrazonesaroylhydrazonesimpedance spectroscopyelectrical properties |
| spellingShingle | Jana Pisk Marko Dunatov Martina Stojić Nenad Judaš Ivica Đilović Marta Razum Luka Pavić Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy Molecules copper complexes (thio)carbohydrazones aroylhydrazones impedance spectroscopy electrical properties |
| title | Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy |
| title_full | Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy |
| title_fullStr | Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy |
| title_full_unstemmed | Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy |
| title_short | Electrical Properties of Cu-Based Coordination Complexes: Insights from In Situ Impedance Spectroscopy |
| title_sort | electrical properties of cu based coordination complexes insights from in situ impedance spectroscopy |
| topic | copper complexes (thio)carbohydrazones aroylhydrazones impedance spectroscopy electrical properties |
| url | https://www.mdpi.com/1420-3049/30/1/82 |
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