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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | Chemical Speciation of Mixed-Ligand Complexes of Co(II), Ni(II) and Cu(II) with MSA and L-Dopa in Acetonitrile -Water Mixtures |
| Authors Name: | PILLI LAKSHMI KISHORE , V TEJESWARA RAO , Prof. G. NAGESWARA RAO |
| Unique Id: | IJSDR1908009 |
| Published In: | Volume 4 Issue 8, August-2019 |
| Abstract: | A computer assisted pH-metric investigation has been carried out on the speciation of complexes of Co(II), Ni(II) and Cu(II) with MSA and L-Dopa. The titrations were performed in the presence of different relative concentrations (M:L:X = 1.0:2.5:2.5; 1.0:2.5:3.75; 1.0:3.75:2.5) of metal (M) to MSA (L) to L-Dopa (X) with sodium hydroxide in varying concentrations (0–60% v/v) of acetonitrile–water mixtures at an ionic strength of 0.16 mol L-1 and at a temperature of 303.0 K. Stability constants of the ternary complexes were refined using MINIQUAD75. The species MLX, MLX2, MLX2H and MLXH2 for Co(II), Ni(II) and Cu(II) were detected. Influence of the solvent on the speciation was discussed based on the dielectric constant of the medium. The stabilities of the mixed ligand complexes are discussed in terms of the molecular structure of MSA and L-Dopa as well as the nature of the metal ion. The species distribution with pH at different compositions of acetonitrile–water mixtures and plausible equilibria for the formation of species were also presented. The bioavailability of the metal ions is explained based on the speciation. |
| Keywords: | Mercaprosuccinic acid, Ternary Complexes, Acetonitrile, Speciation |
| Cite Article: | "Chemical Speciation of Mixed-Ligand Complexes of Co(II), Ni(II) and Cu(II) with MSA and L-Dopa in Acetonitrile -Water Mixtures", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.4, Issue 8, page no.50 - 61, August-2019, Available :http://www.ijsdr.org/papers/IJSDR1908009.pdf |
| Downloads: | 000337070 |
| Publication Details: | Published Paper ID: IJSDR1908009 Registration ID:190881 Published In: Volume 4 Issue 8, August-2019 DOI (Digital Object Identifier): Page No: 50 - 61 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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