Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties
Mixed-ligand complexes featuring a carboxylato ligand and bidentate chelate N,N′-donor ligands along with a single halogenido ligand are rarely subjected to studies despite their interesting physical, chemical and biological properties. A direct synthesis involving non-steroidal anti-inflammatory dr...
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MDPI AG
2023-10-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/10/1460 |
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| author | Romana Smolková Lukáš Smolko Morgane Poupon Erika Samoľová |
| author_facet | Romana Smolková Lukáš Smolko Morgane Poupon Erika Samoľová |
| author_sort | Romana Smolková |
| collection | DOAJ |
| description | Mixed-ligand complexes featuring a carboxylato ligand and bidentate chelate N,N′-donor ligands along with a single halogenido ligand are rarely subjected to studies despite their interesting physical, chemical and biological properties. A direct synthesis involving non-steroidal anti-inflammatory drugs flufenamic acid and niflumic acid and sterically hindering N,N′-donor ligands (neocuproine and 2,2′-biquinoline) has been used to prepare mononuclear mixed-ligand zinc complexes with a composition of [ZnCl(<i>flu</i>)(<i>neo</i>)] (<b>1A</b> and <b>1B</b>) and [ZnCl(<i>nif</i>)(<i>biq</i>)] (<b>2</b>). Single-crystal X-ray diffraction data have shown that the carboxylate binding mode differs in the two polymorphs <b>1A</b> and <b>1B</b>, which form molecules of same composition, and the deviations in molecular geometry are further reflected in their supramolecular structures. The inter- and intramolecular interactions and their contributions to the stability of the crystal structures has been investigated by Hirshfeld surface analysis. The spectral properties of the prepared complexes in solid-state and solution have been analyzed. Additionally, the interaction with the biomacromolecules (fish sperm DNA, human and bovine serum albumins), studied by fluorescence assays, showed a stronger binding of <b>1A</b> and <b>1B</b> in comparison with <b>2</b>. |
| first_indexed | 2024-03-10T21:19:39Z |
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| id | doaj.art-5ea5cba2857846499f1e93718f564734 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T21:19:39Z |
| publishDate | 2023-10-01 |
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| record_format | Article |
| series | Crystals |
| spelling | doaj.art-5ea5cba2857846499f1e93718f5647342023-11-19T16:09:32ZengMDPI AGCrystals2073-43522023-10-011310146010.3390/cryst13101460Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological PropertiesRomana Smolková0Lukáš Smolko1Morgane Poupon2Erika Samoľová3Department of Ecology, University of Prešov, Ul. 17. Novembra 1, SK-08001 Prešov, SlovakiaDepartment of Medical and Clinical Biochemistry, Pavol Jozef Šafárik University in Košice, Trieda SNP 1, SK-04011 Košice, SlovakiaInstitute of Physics, Czech Academy of Sciences, Cukrovarnická 10, CZ-18221 Prague, Czech RepublicInstitute of Physics, Czech Academy of Sciences, Cukrovarnická 10, CZ-18221 Prague, Czech RepublicMixed-ligand complexes featuring a carboxylato ligand and bidentate chelate N,N′-donor ligands along with a single halogenido ligand are rarely subjected to studies despite their interesting physical, chemical and biological properties. A direct synthesis involving non-steroidal anti-inflammatory drugs flufenamic acid and niflumic acid and sterically hindering N,N′-donor ligands (neocuproine and 2,2′-biquinoline) has been used to prepare mononuclear mixed-ligand zinc complexes with a composition of [ZnCl(<i>flu</i>)(<i>neo</i>)] (<b>1A</b> and <b>1B</b>) and [ZnCl(<i>nif</i>)(<i>biq</i>)] (<b>2</b>). Single-crystal X-ray diffraction data have shown that the carboxylate binding mode differs in the two polymorphs <b>1A</b> and <b>1B</b>, which form molecules of same composition, and the deviations in molecular geometry are further reflected in their supramolecular structures. The inter- and intramolecular interactions and their contributions to the stability of the crystal structures has been investigated by Hirshfeld surface analysis. The spectral properties of the prepared complexes in solid-state and solution have been analyzed. Additionally, the interaction with the biomacromolecules (fish sperm DNA, human and bovine serum albumins), studied by fluorescence assays, showed a stronger binding of <b>1A</b> and <b>1B</b> in comparison with <b>2</b>.https://www.mdpi.com/2073-4352/13/10/1460zincNSAIDX-ray diffractionfluorescenceHirshfeld surface |
| spellingShingle | Romana Smolková Lukáš Smolko Morgane Poupon Erika Samoľová Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties Crystals zinc NSAID X-ray diffraction fluorescence Hirshfeld surface |
| title | Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties |
| title_full | Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties |
| title_fullStr | Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties |
| title_full_unstemmed | Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties |
| title_short | Pentacoordinate Mixed-Ligand Zn(II) Complexes with Flufenamato and Niflumato Ligands: Crystal Structure, Spectral Characterization and Biological Properties |
| title_sort | pentacoordinate mixed ligand zn ii complexes with flufenamato and niflumato ligands crystal structure spectral characterization and biological properties |
| topic | zinc NSAID X-ray diffraction fluorescence Hirshfeld surface |
| url | https://www.mdpi.com/2073-4352/13/10/1460 |
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