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Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations
[Image: see text] Speciation of Mo(VI) in chloride media (0.5–11 M HCl) at elevated Mo concentrations (0.1–300 mM Mo) was investigated using UV spectroscopy. In addition to five major monomeric species, H(2)MoO(4), H(3)MoO(4)(+), H(3)MoO(4)Cl, MoO(2)Cl(2), and MoO(2)Cl(3)(–), chemometric analysis of...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513329/ https://www.ncbi.nlm.nih.gov/pubmed/32984698 http://dx.doi.org/10.1021/acsomega.0c02858 |
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author | Bettinardi, David J. Paulenova, Alena Tkac, Peter |
author_facet | Bettinardi, David J. Paulenova, Alena Tkac, Peter |
author_sort | Bettinardi, David J. |
collection | PubMed |
description | [Image: see text] Speciation of Mo(VI) in chloride media (0.5–11 M HCl) at elevated Mo concentrations (0.1–300 mM Mo) was investigated using UV spectroscopy. In addition to five major monomeric species, H(2)MoO(4), H(3)MoO(4)(+), H(3)MoO(4)Cl, MoO(2)Cl(2), and MoO(2)Cl(3)(–), chemometric analysis of UV spectra suggests the presence of three cationic dinuclear species that predominate in solutions of 1–4.5 M HCl at >20 mM Mo concentrations. Thermodynamic values and molar absorptivity spectra were calculated from UV spectrophotometric data using refined numerical methods. The stability constants determined for three Mo dimers are log β = 3.53 ± 0.05 (H(2)Mo(2)O(5)(2+)), log β = 3.60 ± 0.04 (H(3)Mo(2)O(5)(3+)), and log β = 2.91 ± 0.03 (H(3)Mo(2)O(6)Cl(2+)). |
format | Online Article Text |
id | pubmed-7513329 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-75133292020-09-25 Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations Bettinardi, David J. Paulenova, Alena Tkac, Peter ACS Omega [Image: see text] Speciation of Mo(VI) in chloride media (0.5–11 M HCl) at elevated Mo concentrations (0.1–300 mM Mo) was investigated using UV spectroscopy. In addition to five major monomeric species, H(2)MoO(4), H(3)MoO(4)(+), H(3)MoO(4)Cl, MoO(2)Cl(2), and MoO(2)Cl(3)(–), chemometric analysis of UV spectra suggests the presence of three cationic dinuclear species that predominate in solutions of 1–4.5 M HCl at >20 mM Mo concentrations. Thermodynamic values and molar absorptivity spectra were calculated from UV spectrophotometric data using refined numerical methods. The stability constants determined for three Mo dimers are log β = 3.53 ± 0.05 (H(2)Mo(2)O(5)(2+)), log β = 3.60 ± 0.04 (H(3)Mo(2)O(5)(3+)), and log β = 2.91 ± 0.03 (H(3)Mo(2)O(6)Cl(2+)). American Chemical Society 2020-09-09 /pmc/articles/PMC7513329/ /pubmed/32984698 http://dx.doi.org/10.1021/acsomega.0c02858 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Bettinardi, David J. Paulenova, Alena Tkac, Peter Speciation of Molybdenum(VI) in Chloride Media at Elevated Mo Concentrations |
title | Speciation of Molybdenum(VI) in Chloride Media at
Elevated Mo Concentrations |
title_full | Speciation of Molybdenum(VI) in Chloride Media at
Elevated Mo Concentrations |
title_fullStr | Speciation of Molybdenum(VI) in Chloride Media at
Elevated Mo Concentrations |
title_full_unstemmed | Speciation of Molybdenum(VI) in Chloride Media at
Elevated Mo Concentrations |
title_short | Speciation of Molybdenum(VI) in Chloride Media at
Elevated Mo Concentrations |
title_sort | speciation of molybdenum(vi) in chloride media at
elevated mo concentrations |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513329/ https://www.ncbi.nlm.nih.gov/pubmed/32984698 http://dx.doi.org/10.1021/acsomega.0c02858 |
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