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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...

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Autores principales: Bettinardi, David J., Paulenova, Alena, Tkac, Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
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+)).
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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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