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Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes

Several molecular cobalt(ii) complexes, one Co(ii) coordination polymer and one ionic cobalt(iii) complex with imine hemisalen ligands were synthesized. The hemisalen ligands were synthesized from o-vanillin (oVP) and diverse aminopyridines (compounds HL1–HL4) or aminophenol (compound HL5). It was o...

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Autores principales: Siedzielnik, Magdalena, Pawłowska, Monika, Daśko, Mateusz, Kleinschmidt, Hubert, Dołęga, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10018370/
https://www.ncbi.nlm.nih.gov/pubmed/36936819
http://dx.doi.org/10.1039/d2ra07089h
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author Siedzielnik, Magdalena
Pawłowska, Monika
Daśko, Mateusz
Kleinschmidt, Hubert
Dołęga, Anna
author_facet Siedzielnik, Magdalena
Pawłowska, Monika
Daśko, Mateusz
Kleinschmidt, Hubert
Dołęga, Anna
author_sort Siedzielnik, Magdalena
collection PubMed
description Several molecular cobalt(ii) complexes, one Co(ii) coordination polymer and one ionic cobalt(iii) complex with imine hemisalen ligands were synthesized. The hemisalen ligands were synthesized from o-vanillin (oVP) and diverse aminopyridines (compounds HL1–HL4) or aminophenol (compound HL5). It was observed that cobalt(ii) chloride in dry acetonitrile catalyzes a transformation of HL1 and HL3 instead of complex formation. The conversion of these imines proceeded via self-cyclization to N-2′′-pyridyl-2,6-dioxo-9-aza-[c,g]di-2′-methoxybenzo nonan or its methyl derivative as the major product. The remaining reactions were performed using imines HL1–HL5 and cobalt(ii) acetate Co(Ac)(2) in methanol or DMSO/acetonitrile resulting in forming a series of cobalt complexes. The following series of compounds was obtained: two similar tetrahedral molecular Co(ii) complexes [Co(L1)(2)] and [Co(L3)(2)], one trinuclear, mixed-ligand Co(3)(Ac)(2)(L4)(2)(oVP)(2), one coordination polymer {Co(L2)(2)}(∞) and finally one octahedral anionic Co(iii) complex [HNEt(3)][Co(L5)(3)]. The latter complex formed in a cobalt(ii) acetate reaction with a hemisalen HL5 derived from oVP and 2-aminophenol. The molecular structures of all compounds were confirmed by X-ray diffraction, and the cytotoxicity of Co(ii) and Co(iii) complexes towards cancer cell lines HCT116, HL-60 and normal cell line MRC-5 was studied.
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spelling pubmed-100183702023-03-17 Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes Siedzielnik, Magdalena Pawłowska, Monika Daśko, Mateusz Kleinschmidt, Hubert Dołęga, Anna RSC Adv Chemistry Several molecular cobalt(ii) complexes, one Co(ii) coordination polymer and one ionic cobalt(iii) complex with imine hemisalen ligands were synthesized. The hemisalen ligands were synthesized from o-vanillin (oVP) and diverse aminopyridines (compounds HL1–HL4) or aminophenol (compound HL5). It was observed that cobalt(ii) chloride in dry acetonitrile catalyzes a transformation of HL1 and HL3 instead of complex formation. The conversion of these imines proceeded via self-cyclization to N-2′′-pyridyl-2,6-dioxo-9-aza-[c,g]di-2′-methoxybenzo nonan or its methyl derivative as the major product. The remaining reactions were performed using imines HL1–HL5 and cobalt(ii) acetate Co(Ac)(2) in methanol or DMSO/acetonitrile resulting in forming a series of cobalt complexes. The following series of compounds was obtained: two similar tetrahedral molecular Co(ii) complexes [Co(L1)(2)] and [Co(L3)(2)], one trinuclear, mixed-ligand Co(3)(Ac)(2)(L4)(2)(oVP)(2), one coordination polymer {Co(L2)(2)}(∞) and finally one octahedral anionic Co(iii) complex [HNEt(3)][Co(L5)(3)]. The latter complex formed in a cobalt(ii) acetate reaction with a hemisalen HL5 derived from oVP and 2-aminophenol. The molecular structures of all compounds were confirmed by X-ray diffraction, and the cytotoxicity of Co(ii) and Co(iii) complexes towards cancer cell lines HCT116, HL-60 and normal cell line MRC-5 was studied. The Royal Society of Chemistry 2023-03-16 /pmc/articles/PMC10018370/ /pubmed/36936819 http://dx.doi.org/10.1039/d2ra07089h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Siedzielnik, Magdalena
Pawłowska, Monika
Daśko, Mateusz
Kleinschmidt, Hubert
Dołęga, Anna
Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title_full Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title_fullStr Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title_full_unstemmed Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title_short Reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. Preliminary study on the cytotoxicity of Co(ii) and Co(iii) hemisalen complexes
title_sort reactions of cobalt(ii) chloride and cobalt(ii) acetate with hemisalen-type ligands: ligand transformation, oxidation of cobalt and complex formation. preliminary study on the cytotoxicity of co(ii) and co(iii) hemisalen complexes
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10018370/
https://www.ncbi.nlm.nih.gov/pubmed/36936819
http://dx.doi.org/10.1039/d2ra07089h
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