European Journal of Chemistry 2020, 11(1), 1-5 | doi: https://doi.org/10.5155/eurjchem.11.1.1-5.1948 | Get rights and content






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A dimeric oxidovanadium(V) complex derived from a hydrazonate ligand with an unusual asymmetrically bridged μ-(oxido)μ-(H2O){oxidovanadium(V)}2 core


Alice Prudente Borges (1) orcid , Claudia Cristina Gatto (2) orcid , Victor Marcelo Deflon (3) orcid , Pedro Ivo da Silva Maia (4,*) orcid

(1) Departamento de Quimica, Universidade Federal do Triangulo Mineiro, Av. Dr. Randolfo Borges 1400, 38025-440, Uberaba, MG, Brazil
(2) Instituto de Quimica, Universidade de Brasilia, Brasilia, Distrito Federal, Brazil
(3) Instituto de Quimica de Sao Carlos, Universidade de Sao Paulo, Av. Trabalhador Sao Carlense, 400, 13566-590, Sao Carlos, SP, Brazil
(4) Departamento de Quimica, Universidade Federal do Triangulo Mineiro, Av. Dr. Randolfo Borges 1400, 38025-440, Uberaba, MG, Brazil
(*) Corresponding Author

Received: 15 Dec 2019 | Revised: 15 Jan 2020 | Accepted: 17 Jan 2020 | Published: 31 Mar 2020 | Issue Date: March 2020

Abstract


The binuclear oxidovanadium(V) complex [{VO(L)}2(μ-O)(μ-H2O)]∙2CH3CN (1), where L2– is the dianion of the Schiff base 2-salicylaldehyde-2-hydroxybenzoylhydrazone, were prepared and characterized by elemental analysis, FTIR, 1H, 13C and 51V NMR. Furthermore, the crystal structure of the compound 1 was determined by single crystal X-ray diffractometry revealing a distorted octahedral O5N-coordination geometry around the V(V) acceptor centers. The vanadium ions are connected by the μ-O2– and the μ-H2O asymmetric bridges located in the edge between the two octahedrons which keeps a distance of 3.194 Å between the two vanadium centers. Crystal data for C32H28N6O10V2 (=758.48 g/mol): orthorhombic, space group P212121 (no. 19), a = 12.9655(8) Å, b = 14.1902(9) Å, c = 18.4379(10) Å, = 3392.3(4) Å3, Z = 4, T = 293(2) K, μ(MoKα) = 0.616 mm-1, Dcalc = 1.485 g/cm3, 18803 reflections measured (3.622° ≤ 2Θ ≤ 56.704°), 8263 unique (Rint = 0.0473, Rsigma = 0.1020) which were used in all calculations. The final R1 was 0.0509 (I > 2σ(I)) and wR2 was 0.1531 (all data). The (VO)2(μ-O)(μ-H2O) core in compound 1 represents a rare case and few examples of similar type have been structurally characterized.


Keywords


Vanadyl; Hydrazones; Insulin mimesis; Crystal structure; Vanadium complexes; Coordination chemistry

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DOI: 10.5155/eurjchem.11.1.1-5.1948

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Funding information


Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG) and Fundacao de Amparo a Pesquisa de Sso Paulo (FAPESP).

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The Supplementary Material for this article can be found online at: Supplementary files

How to cite


Borges, A.; Gatto, C.; Deflon, V.; Maia, P. Eur. J. Chem. 2020, 11(1), 1-5. doi:10.5155/eurjchem.11.1.1-5.1948
Borges, A.; Gatto, C.; Deflon, V.; Maia, P. A dimeric oxidovanadium(V) complex derived from a hydrazonate ligand with an unusual asymmetrically bridged μ-(oxido)μ-(H2O){oxidovanadium(V)}2 core. Eur. J. Chem. 2020, 11(1), 1-5. doi:10.5155/eurjchem.11.1.1-5.1948
Borges, A., Gatto, C., Deflon, V., & Maia, P. (2020). A dimeric oxidovanadium(V) complex derived from a hydrazonate ligand with an unusual asymmetrically bridged μ-(oxido)μ-(H2O){oxidovanadium(V)}2 core. European Journal of Chemistry, 11(1), 1-5. doi:10.5155/eurjchem.11.1.1-5.1948
Borges, Alice, Claudia Cristina Gatto, Victor Marcelo Deflon, & Pedro Ivo da Silva Maia. "A dimeric oxidovanadium(V) complex derived from a hydrazonate ligand with an unusual asymmetrically bridged μ-(oxido)μ-(H2O){oxidovanadium(V)}2 core." European Journal of Chemistry [Online], 11.1 (2020): 1-5. Web. 5 Dec. 2020
Borges, Alice, Gatto, Claudia, Deflon, Victor, AND Maia, Pedro Ivo. "A dimeric oxidovanadium(V) complex derived from a hydrazonate ligand with an unusual asymmetrically bridged μ-(oxido)μ-(H2O){oxidovanadium(V)}2 core" European Journal of Chemistry [Online], Volume 11 Number 1 (31 March 2020)

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DOI Link: https://doi.org/10.5155/eurjchem.11.1.1-5.1948

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