First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization
In the reaction of acetone solutions of CoX2∙nH2O (X = Cl, Br) with methyl pyruvate semi/thiosemicarbazone (Hmps, Hmpt) the first Co(II) complexes with these ligands, i.e., [Co(Hmps)(H2O)X2] (X = Cl (1), Br (2)), [Co(Hmpt)2][CoCl4]∙2H2О (3) and [Co(Hmpt)2]Br2∙Me2CO (4) were obtained. Complexes 1 and...
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doaj-30ee28ae3b5b48a0843b9933327610962020-11-25T02:54:03ZengSerbian Chemical Society Journal of the Serbian Chemical Society0352-51391820-74212020-01-0185445346610.2298/JSC191219010R0352-51392000010RFirst cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterizationRodić Marko V.0Miškov-Pajić Vukoslava1Leovac Vukadin M.2Radanović Mirjana M.3Vojinović-Ješić Ljiljana S.4Belošević Svetlana K.5Jaćimović Željko K.6Živković-Radovanović Vukosava7University of Novi Sad, Faculty of Sciences, Novi Sad, SerbiaUniversity of Stuttgart, Stuttgart, GermanyUniversity of Novi Sad, Faculty of Sciences, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Sciences, Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Sciences, Novi Sad, SerbiaFaculty of Technical Sciences, University of Priština, Kosovska Mitrovica, SerbiaFaculty of Metallurgy and Technology, University of Montenegro, Podgorica, MontenegroFaculty of Chemistry, University of Belgrade, Belgrade, SerbiaIn the reaction of acetone solutions of CoX2∙nH2O (X = Cl, Br) with methyl pyruvate semi/thiosemicarbazone (Hmps, Hmpt) the first Co(II) complexes with these ligands, i.e., [Co(Hmps)(H2O)X2] (X = Cl (1), Br (2)), [Co(Hmpt)2][CoCl4]∙2H2О (3) and [Co(Hmpt)2]Br2∙Me2CO (4) were obtained. Complexes 1 and 2 represent the first examples of metal complexes of Hmps. All the obtained compounds were characterized by elemental analysis, conductometry, magnetic measurements, and IR spectra, and for complexes 2–4, single crystal X-ray diffraction analysis was also performed. The effective magnetic moments were close to the upper limit (5 μB) for complexes 1 and 2, and close to the lower limit (4.4 μB) for complexes 3 and 4, and as such are characteristic for high-spin Co(II) complexes. Structural analysis showed that both ligands coordinate in a neutral form in a tridentate manner, via the ester oxygen, imine nitrogen and the oxygen atom of the ureido (Hmps), or the sulfur atom of the thioureido group (Hmpt). The central metal atoms are situated in a deformed octahedral coordination environment. Complex 2 has cis-Br configuration, while complexes 3 and 4 have mer-configuration. [Projects of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172014 and Grant no. III41010]http://www.doiserbia.nb.rs/img/doi/0352-5139/2020/0352-51392000010R.pdfcobalt complexeshydrazonessingle crystal x-ray analysis |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rodić Marko V. Miškov-Pajić Vukoslava Leovac Vukadin M. Radanović Mirjana M. Vojinović-Ješić Ljiljana S. Belošević Svetlana K. Jaćimović Željko K. Živković-Radovanović Vukosava |
spellingShingle |
Rodić Marko V. Miškov-Pajić Vukoslava Leovac Vukadin M. Radanović Mirjana M. Vojinović-Ješić Ljiljana S. Belošević Svetlana K. Jaćimović Željko K. Živković-Radovanović Vukosava First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization Journal of the Serbian Chemical Society cobalt complexes hydrazones single crystal x-ray analysis |
author_facet |
Rodić Marko V. Miškov-Pajić Vukoslava Leovac Vukadin M. Radanović Mirjana M. Vojinović-Ješić Ljiljana S. Belošević Svetlana K. Jaćimović Željko K. Živković-Radovanović Vukosava |
author_sort |
Rodić Marko V. |
title |
First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
title_short |
First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
title_full |
First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
title_fullStr |
First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
title_full_unstemmed |
First cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
title_sort |
first cobalt complexes with methyl pyruvate semi/thiosemicarbazone - synthesis, physico-chemical and structural characterization |
publisher |
Serbian Chemical Society |
series |
Journal of the Serbian Chemical Society |
issn |
0352-5139 1820-7421 |
publishDate |
2020-01-01 |
description |
In the reaction of acetone solutions of CoX2∙nH2O (X = Cl, Br) with methyl pyruvate semi/thiosemicarbazone (Hmps, Hmpt) the first Co(II) complexes with these ligands, i.e., [Co(Hmps)(H2O)X2] (X = Cl (1), Br (2)), [Co(Hmpt)2][CoCl4]∙2H2О (3) and [Co(Hmpt)2]Br2∙Me2CO (4) were obtained. Complexes 1 and 2 represent the first examples of metal complexes of Hmps. All the obtained compounds were characterized by elemental analysis, conductometry, magnetic measurements, and IR spectra, and for complexes 2–4, single crystal X-ray diffraction analysis was also performed. The effective magnetic moments were close to the upper limit (5 μB) for complexes 1 and 2, and close to the lower limit (4.4 μB) for complexes 3 and 4, and as such are characteristic for high-spin Co(II) complexes. Structural analysis showed that both ligands coordinate in a neutral form in a tridentate manner, via the ester oxygen, imine nitrogen and the oxygen atom of the ureido (Hmps), or the sulfur atom of the thioureido group (Hmpt). The central metal atoms are situated in a deformed octahedral coordination environment. Complex 2 has cis-Br configuration, while complexes 3 and 4 have mer-configuration. [Projects of the Serbian Ministry of Education, Science and Technological
Development, Grant no. 172014 and Grant no. III41010] |
topic |
cobalt complexes hydrazones single crystal x-ray analysis |
url |
http://www.doiserbia.nb.rs/img/doi/0352-5139/2020/0352-51392000010R.pdf |
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