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Special Issue "Vanadium in the Center: Current Chemistry and Utilization of the Versatile Metal"

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A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Coordination Chemistry".

Deadline for manuscript submissions: 31 October 2023 | Viewed by 1810

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Special Issue Editor

Dr. Lukáš Krivosudský

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Guest Editor

Deparmtent of inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
Interests: vanadium; vanadates; polyoxometalates; bioinorganic chemistry

Special Issue Information

Dear Colleagues,

Since the discovery of vanadium nearly 200 hundred years ago, the metal has found many applications, mostly in alloys, resulting in the utilization of about 85% of the produced vanadium as ferrovanadium or as a steel additive. Among the compounds of vanadium, V₂O₅ is a prominent catalyst in sulfuric acid production and other reactions. On the other hand, vanadium forms a vast number of coordination compounds in various oxidation states, and together with polyvanadates and mixed vanadium-containing polyoxometalates they offer applications in distinct areas of chemistry, biology, and materials science. Vanadium is the second most abundant transition metal in seawater, and it has been found in several sea species, such as tunicates, where it is stored in vanadocytes and binds to specialized enzymes known as vanabins. It is assumed that the function of vanadium in biological and catalytic systems is mostly related to its versatile oxidation/reduction processes between the oxidation states II, III, IV, and V. Vanadium is also found in terrestrial species, such as amantina muscaria, where it is present as a vanadium (IV) coordination compound amavadin with a not-yet-elucidated function. These and many other examples have stimulated the utilization of vanadium complexes, polyvanadates, and vanadium-based materials, not only in biological applications but also in materials science and electrochemistry. In this Special Issue, we wish to cover the most recent advances in all these aspects of vanadium chemistry, chemical biology, and materials science, by hosting a mix of original research articles and short critical reviews.

Dr. Lukáš Krivosudský
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Inorganics is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

vanadium
vanadates
vanadium coordination chemistry
vanadium bioinorganic chemistry
vanadium organometallic chemistry
vanadium-based materials

Published Papers (3 papers)

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Research

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Open AccessArticle

MoO₃ Solubility and Chemical Durability of V₂O₅-Bearing Borosilicate Glass

Minako Nagata

and

Toru Sugawara

Inorganics 2023, 11(7), 311; https://doi.org/10.3390/inorganics11070311 - 24 Jul 2023

Viewed by 372

Abstract

In the vitrification of high-level radioactive liquid waste (HLW), the separation of sodium-molybdate melts is a problem because it reduces the chemical durability of the vitrified waste. A glass with both high MoO₃ solubility and chemical durability is required for the safe disposal of radioactive waste. In this study, we investigate the effects of vanadium oxide on the phase separation of the molybdenum-rich phase and the water resistance of the resulting glass by phase equilibrium experiments and chemical durability test. Phase equilibrium experiments were performed on SiO₂-B₂O₃-Al₂O₃-ZnO-CaO-Na₂O-LiO₂-MoO₃ system glasses and on glasses with V₂O₅ added. The results showed that MoO₃ solubility increased when V₂O₅ was added. The increase in MoO₃ solubility in borosilicate melts may be associated with the viscosity-lowering effect of V₂O₅. Chemical durability tests were performed on borosilicate glass compositions obtained from phase equilibrium experiments. The normalized leaching rates of V₂O₅-bearing glasses were higher than those of other glasses. This is due to the higher network modifier/network former ratio of the glass tested. The normalized elemental mass loss of glass containing waste components increases with increasing leaching duration. This suggests that the waste component prevents the formation of a gel layer at the reaction front. Full article

(This article belongs to the Special Issue Vanadium in the Center: Current Chemistry and Utilization of the Versatile Metal)

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Open AccessArticle

A Self-Consistent Exact Diagonalization Approach to the Ground State Magnetic Properties of the Meridional [V(ddpd)₂]³⁺ Complex

Miroslav Georgiev

Takvor Baronian

and

Hassan Chamati

Inorganics 2023, 11(7), 268; https://doi.org/10.3390/inorganics11070268 - 24 Jun 2023

Viewed by 516

Abstract

The present paper presents a thorough study of the ground state magnetic properties of the spin-one mononuclear nanomagnet mer-[V(ddpd)

_{2}

][PF

_{6}

]

_{3}

, with the V

^{3 +}

center exhibiting a distorted octahedral coordination. The theoretical analysis is based on [...] Read more.

The present paper presents a thorough study of the ground state magnetic properties of the spin-one mononuclear nanomagnet mer-[V(ddpd)

_{2}

][PF

_{6}

]

_{3}

, with the V

^{3 +}

center exhibiting a distorted octahedral coordination. The theoretical analysis is based on a multiconfigurational, self-consistent approach that effectively parametrizes the total energy spectrum of the considered coordination complex via exact diagonalization. We provide a comprehensive discussion for the obtained zero-field and field-dependent fine structure of the ground state along with the ensuing crystal field splitting of the 3d orbitals. Furthermore, we report the results for the low-field susceptibility, magnetization and the corresponding reversal dynamics, finding good agreement with the experimental data reported in the literature. The calculations show considerable zero-field splitting and strong field-dependent orbital unquenching underlying the occurrence of a field-induced full profile magnetization reversal barrier. Full article

(This article belongs to the Special Issue Vanadium in the Center: Current Chemistry and Utilization of the Versatile Metal)

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Figure 1

Review

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Open AccessReview

Import and Implications of Vanadium in Live Aspects

Dieter Rehder

Inorganics 2023, 11(6), 256; https://doi.org/10.3390/inorganics11060256 - 12 Jun 2023

Viewed by 631

Abstract

In Earth’s regions accessible for living organisms (Earth’s crust, crude oil, water sanctuaries and lower atmosphere), vanadium is present in the oxidation states +III and—essentially—+IV (cationic) and +V (cationic and anionic), with the redox interchange and biochemical recycling often monitored by bacteria. Organisms having available vanadium-containing (bio)molecules with essential functions for life include marine brown algae (haloperoxidases), ascidians and fan worms, as well as terrestrial organisms, viz., nitrogen-fixing bacteria (associated with the roots of legumes), and the fly agaric mushroom. The hypohalite generated by the algal haloperoxidases in turn is involved in the emission of bromoform into the atmosphere. Nitrogen fixation (N₂ ε NH₄⁺) is a process of immanent importance for life on our planet. Other bacterial issues include the reduction of vanadate to VO²⁺. Medicinal applications of vanadium coordination compounds are directed towards the treatment of diabetes mellitus (vanadium complexes with hypoglycemic activity) and cancer—although boundaries are set due to side effects such as oxidative damage elicited by vanadium-induced hyperoxide formation. Physiological actions of vanadium are often invoked due to the structural and physiological similarity between vanadate and phosphate. An additional field of medicinal applications addresses the treatment of cancer, such as leukaemia, malignant melanoma and bone cancer. Full article

(This article belongs to the Special Issue Vanadium in the Center: Current Chemistry and Utilization of the Versatile Metal)

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