Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate
The powder complex of tris(bipyridine)cobalt(II) trifluoromethanesulfonate octahydrate has been synthesized by direct interaction of the corresponding aqueous solutions (and drops of ethanol) of cobalt(II) nitrate, bipyridine, and potassium triflate. The yellow-orange powder produced was filtered of...
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| Format: | Article |
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Department of Chemistry, Universitas Gadjah Mada
2018-11-01
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| Series: | Indonesian Journal of Chemistry |
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| Online Access: | https://jurnal.ugm.ac.id/ijc/article/view/26833 |
| _version_ | 1818823932375990272 |
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| author | Kristian Handoyo Sugiyarto Cahyorini Kusumawardani Kristanti Eka Wulandari |
| author_facet | Kristian Handoyo Sugiyarto Cahyorini Kusumawardani Kristanti Eka Wulandari |
| author_sort | Kristian Handoyo Sugiyarto |
| collection | DOAJ |
| description | The powder complex of tris(bipyridine)cobalt(II) trifluoromethanesulfonate octahydrate has been synthesized by direct interaction of the corresponding aqueous solutions (and drops of ethanol) of cobalt(II) nitrate, bipyridine, and potassium triflate. The yellow-orange powder produced was filtered off and allowed to dry on an aeration for characterization. AAS measurement showed the content of metal to be 6.06%, corresponding to the theoretical value of 6.06% in [Co(bipy)3](CF3SO3)2.8H2O. The analysis of conductance producing the charge ratio of cation to anion to be 2:1, confirms the formula. The magnetic moment, µeff, of this complex which was to be 4.5-4.9 BM, indicates that the complex is paramagnetic corresponding to the three unpaired electrons with a significantly orbital contribution. UV-Vis spectrum of the complex reveals the first band observed at about 11100 cm–1, which is associated with the spin-allowed transition, 4T1g → 4T2g. A distinct shoulder at only about 16100 cm–1 should be associated with the spin-forbidden transition of 4T1g → 2T2g,2T2g (G). The expected second and third bands which are associated with spin-allowed transitions of 4T1g → 4T1g(P) and 4T1g → 4A2g at higher energy were not well resolved. The infrared spectrum shows absorptions of the functional group of ligand which is influenced by the metal-ligand interaction in this complex. The powder XRD of this complex was refined using Le Bail method of Rietica program and found to be fit as monoclinic symmetry with a space group of C2/c. |
| first_indexed | 2024-12-18T23:47:50Z |
| format | Article |
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| issn | 1411-9420 2460-1578 |
| language | English |
| last_indexed | 2024-12-18T23:47:50Z |
| publishDate | 2018-11-01 |
| publisher | Department of Chemistry, Universitas Gadjah Mada |
| record_format | Article |
| series | Indonesian Journal of Chemistry |
| spelling | doaj.art-de24f596206945bda9455c19337f8cf22022-12-21T20:47:09ZengDepartment of Chemistry, Universitas Gadjah MadaIndonesian Journal of Chemistry1411-94202460-15782018-11-0118469670110.22146/ijc.2683322228Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate OctahydrateKristian Handoyo Sugiyarto0Cahyorini Kusumawardani1Kristanti Eka Wulandari2Department of Chemistry Education, Yogyakarta State University, Jl. Colombo No. 1, Yogyakarta 55281, IndonesiaDepartment of Chemistry Education, Yogyakarta State University, Jl. Colombo No. 1, Yogyakarta 55281, IndonesiaDepartment of Chemistry Education, Yogyakarta State University, Jl. Colombo No. 1, Yogyakarta 55281, IndonesiaThe powder complex of tris(bipyridine)cobalt(II) trifluoromethanesulfonate octahydrate has been synthesized by direct interaction of the corresponding aqueous solutions (and drops of ethanol) of cobalt(II) nitrate, bipyridine, and potassium triflate. The yellow-orange powder produced was filtered off and allowed to dry on an aeration for characterization. AAS measurement showed the content of metal to be 6.06%, corresponding to the theoretical value of 6.06% in [Co(bipy)3](CF3SO3)2.8H2O. The analysis of conductance producing the charge ratio of cation to anion to be 2:1, confirms the formula. The magnetic moment, µeff, of this complex which was to be 4.5-4.9 BM, indicates that the complex is paramagnetic corresponding to the three unpaired electrons with a significantly orbital contribution. UV-Vis spectrum of the complex reveals the first band observed at about 11100 cm–1, which is associated with the spin-allowed transition, 4T1g → 4T2g. A distinct shoulder at only about 16100 cm–1 should be associated with the spin-forbidden transition of 4T1g → 2T2g,2T2g (G). The expected second and third bands which are associated with spin-allowed transitions of 4T1g → 4T1g(P) and 4T1g → 4A2g at higher energy were not well resolved. The infrared spectrum shows absorptions of the functional group of ligand which is influenced by the metal-ligand interaction in this complex. The powder XRD of this complex was refined using Le Bail method of Rietica program and found to be fit as monoclinic symmetry with a space group of C2/c.https://jurnal.ugm.ac.id/ijc/article/view/26833RieticaLe Bailbipytrifluoromethanesulfonatecobalt(II) |
| spellingShingle | Kristian Handoyo Sugiyarto Cahyorini Kusumawardani Kristanti Eka Wulandari Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate Indonesian Journal of Chemistry Rietica Le Bail bipy trifluoromethanesulfonate cobalt(II) |
| title | Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate |
| title_full | Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate |
| title_fullStr | Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate |
| title_full_unstemmed | Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate |
| title_short | Synthesis and Structural Analysis of Powder Complex of Tris(bipyridine)cobalt(II) Trifluoromethanesulfonate Octahydrate |
| title_sort | synthesis and structural analysis of powder complex of tris bipyridine cobalt ii trifluoromethanesulfonate octahydrate |
| topic | Rietica Le Bail bipy trifluoromethanesulfonate cobalt(II) |
| url | https://jurnal.ugm.ac.id/ijc/article/view/26833 |
| work_keys_str_mv | AT kristianhandoyosugiyarto synthesisandstructuralanalysisofpowdercomplexoftrisbipyridinecobaltiitrifluoromethanesulfonateoctahydrate AT cahyorinikusumawardani synthesisandstructuralanalysisofpowdercomplexoftrisbipyridinecobaltiitrifluoromethanesulfonateoctahydrate AT kristantiekawulandari synthesisandstructuralanalysisofpowdercomplexoftrisbipyridinecobaltiitrifluoromethanesulfonateoctahydrate |