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Isolation of the Elusive Heptavanadate Anion with Trisalkoxide Ligands.

ABSTRACT: The unprecedented heptavanadate cluster has been isolated from reactions between trisalkoxide ligands and vanadate in water at pH = 2 as a series of alkylammonium [H_xV₇O₁₈(H₂O)((OCH₂)₃CR)]^(4-x)- salts (1-3, R = CH₂OH; 4, R = CH₃). Their structures have been determined and the partial stability of 4 in water assessed by a combination of multinuclear NMR spectroscopy and ESI-MS. The heptavanadate unit reported herein could represent an intermediate species in the formation of decavanadate that is blocked by attachment of tripodal ligands.

SUBMITTER: Fernandez-Navarro L

PROVIDER: S-EPMC9157487 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Isolation of the Elusive Heptavanadate Anion with Trisalkoxide Ligands.

Fernández-Navarro Leticia L Nunes-Collado Aitor A Artetxe Beñat B Ruiz-Bilbao Estibaliz E San Felices Leire L Reinoso Santiago S San José Wéry Ana A Gutiérrez-Zorrilla Juan M JM

Inorganic chemistry 20210405 8

The unprecedented heptavanadate cluster has been isolated from reactions between trisalkoxide ligands and vanadate in water at pH = 2 as a series of alkylammonium [HxV7O18(H2O)((OCH2)3CR)](4-x)- salts (1-3, R = CH2OH; 4, R = CH3). Their structures have been determined and the partial stability of 4 in water assessed by a combination of multinuclear NMR spectroscop ...[more]

PMID: 33818060

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