Science Journal of Chemistry

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Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates

Received: Jul. 28, 2021    Accepted: Aug. 18, 2021    Published: Sep. 06, 2021
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Abstract

While metal carboxylates are by no means rare or inaccessible, complete characterization with notable exception of acetates is largely neglected hence a deficiency within the carboxylate literature giving rise to discrepancies within the characterization data available thus, spectroscopic properties of synthesized sodium metal carboxylates of acetic acid and myristic acid were investigated using Atomic Absorption Spectroscopy (AAS), flame photometry, FTIR spectrophotometer and UV- Visible spectrophotometry. AAS and flame photometric results showed elemental abundance of the sodium metals in the carboxylate complexes. FTIR spectra data revealed ʋCOO- absorptions at 1636 cm-1 and 1558 cm-1 for sodium acetate and sodium myristate respectively. The free acid ligands showed absorptions at 1703 cm-1 for acetic acid which shifted to 1636 cm-1 for sodium acetate. FTIR absorption of myristic acid revealed a strong absorption band at 1696 cm-1 which shifted to 1558 cm-1 in sodium myristate. The geometry of the complexes were determined by the magnitude of separation, Δʋ, which is equal to ʋaym - ʋsym,. The values of Δʋ for the synthesized sodium acetate complex was found to be 231 cm-1 and 138 cm-1 for sodium myristate indicating monodentate and bridging bidentate bonding respectively. Force constants of the carboxylates which correspond to their bond energies were found to be 1495.94 K NM-1 and 1358 K NM-1 for sodium acetate and sodium myristate, respectively. The UV- Visible analysis shows ʎ max values of 201 nm and 195 nm for sodium acetate and sodium myristate respectively, which corresponds to the absorption of the COO chromophore which is due to n-π* transition.

DOI 10.11648/j.sjc.20210905.11
Published in Science Journal of Chemistry ( Volume 9, Issue 5, October 2021 )
Page(s) 113-120
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Carboxylates, Complexes, Bonds, Adsorption, Chromophore

References
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    Iortyom Susan Doofan, Kukwa Donald, Iornumbe Esther Nguumbur, Agbidye Isaac Gbaa, Ijuo Godwin. (2021). Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates. Science Journal of Chemistry, 9(5), 113-120. https://doi.org/10.11648/j.sjc.20210905.11

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    ACS Style

    Iortyom Susan Doofan; Kukwa Donald; Iornumbe Esther Nguumbur; Agbidye Isaac Gbaa; Ijuo Godwin. Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates. Sci. J. Chem. 2021, 9(5), 113-120. doi: 10.11648/j.sjc.20210905.11

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    AMA Style

    Iortyom Susan Doofan, Kukwa Donald, Iornumbe Esther Nguumbur, Agbidye Isaac Gbaa, Ijuo Godwin. Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates. Sci J Chem. 2021;9(5):113-120. doi: 10.11648/j.sjc.20210905.11

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  • @article{10.11648/j.sjc.20210905.11,
      author = {Iortyom Susan Doofan and Kukwa Donald and Iornumbe Esther Nguumbur and Agbidye Isaac Gbaa and Ijuo Godwin},
      title = {Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates},
      journal = {Science Journal of Chemistry},
      volume = {9},
      number = {5},
      pages = {113-120},
      doi = {10.11648/j.sjc.20210905.11},
      url = {https://doi.org/10.11648/j.sjc.20210905.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.sjc.20210905.11},
      abstract = {While metal carboxylates are by no means rare or inaccessible, complete characterization with notable exception of acetates is largely neglected hence a deficiency within the carboxylate literature giving rise to discrepancies within the characterization data available thus, spectroscopic properties of synthesized sodium metal carboxylates of acetic acid and myristic acid were investigated using Atomic Absorption Spectroscopy (AAS), flame photometry, FTIR spectrophotometer and UV- Visible spectrophotometry. AAS and flame photometric results showed elemental abundance of the sodium metals in the carboxylate complexes. FTIR spectra data revealed ʋCOO- absorptions at 1636 cm-1 and 1558 cm-1 for sodium acetate and sodium myristate respectively. The free acid ligands showed absorptions at 1703 cm-1 for acetic acid which shifted to 1636 cm-1 for sodium acetate. FTIR absorption of myristic acid revealed a strong absorption band at 1696 cm-1 which shifted to 1558 cm-1 in sodium myristate. The geometry of the complexes were determined by the magnitude of separation, Δʋ, which is equal to ʋaym - ʋsym,. The values of Δʋ for the synthesized sodium acetate complex was found to be 231 cm-1 and 138 cm-1 for sodium myristate indicating monodentate and bridging bidentate bonding respectively. Force constants of the carboxylates which correspond to their bond energies were found to be 1495.94 K NM-1 and 1358 K NM-1 for sodium acetate and sodium myristate, respectively. The UV- Visible analysis shows ʎ max values of 201 nm and 195 nm for sodium acetate and sodium myristate respectively, which corresponds to the absorption of the COO chromophore which is due to n-π* transition.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Synthesis and Spectrophotometric Properties of Sodium Metal Carboxylates
    AU  - Iortyom Susan Doofan
    AU  - Kukwa Donald
    AU  - Iornumbe Esther Nguumbur
    AU  - Agbidye Isaac Gbaa
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    Y1  - 2021/09/06
    PY  - 2021
    N1  - https://doi.org/10.11648/j.sjc.20210905.11
    DO  - 10.11648/j.sjc.20210905.11
    T2  - Science Journal of Chemistry
    JF  - Science Journal of Chemistry
    JO  - Science Journal of Chemistry
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    EP  - 120
    PB  - Science Publishing Group
    SN  - 2330-099X
    UR  - https://doi.org/10.11648/j.sjc.20210905.11
    AB  - While metal carboxylates are by no means rare or inaccessible, complete characterization with notable exception of acetates is largely neglected hence a deficiency within the carboxylate literature giving rise to discrepancies within the characterization data available thus, spectroscopic properties of synthesized sodium metal carboxylates of acetic acid and myristic acid were investigated using Atomic Absorption Spectroscopy (AAS), flame photometry, FTIR spectrophotometer and UV- Visible spectrophotometry. AAS and flame photometric results showed elemental abundance of the sodium metals in the carboxylate complexes. FTIR spectra data revealed ʋCOO- absorptions at 1636 cm-1 and 1558 cm-1 for sodium acetate and sodium myristate respectively. The free acid ligands showed absorptions at 1703 cm-1 for acetic acid which shifted to 1636 cm-1 for sodium acetate. FTIR absorption of myristic acid revealed a strong absorption band at 1696 cm-1 which shifted to 1558 cm-1 in sodium myristate. The geometry of the complexes were determined by the magnitude of separation, Δʋ, which is equal to ʋaym - ʋsym,. The values of Δʋ for the synthesized sodium acetate complex was found to be 231 cm-1 and 138 cm-1 for sodium myristate indicating monodentate and bridging bidentate bonding respectively. Force constants of the carboxylates which correspond to their bond energies were found to be 1495.94 K NM-1 and 1358 K NM-1 for sodium acetate and sodium myristate, respectively. The UV- Visible analysis shows ʎ max values of 201 nm and 195 nm for sodium acetate and sodium myristate respectively, which corresponds to the absorption of the COO chromophore which is due to n-π* transition.
    VL  - 9
    IS  - 5
    ER  - 

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Author Information
  • Department of Basic Sciences, Faculty of Basic and Health Sciences, Ernest Bai Koroma University of Science and Technology, Makeni, Republic of Sierra Leone

  • Department of Chemistry, Benue State University, Makurdi, Nigeria

  • Department of Chemistry, Federal University of Agriculture, Makurdi, Nigeria

  • Department of Chemistry, Benue State University, Makurdi, Nigeria

  • Department of Chemistry, Federal University of Agriculture, Makurdi, Nigeria

  • Section