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Dismutation of Tricyanoboryllead Compounds: The Homoleptic Tetrakis(tricyanoboryl)plumbate Tetraanion. | LitMetric

Dismutation of Tricyanoboryllead Compounds: The Homoleptic Tetrakis(tricyanoboryl)plumbate Tetraanion.

Angew Chem Int Ed Engl

Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.

Published: June 2022

AI Article Synopsis

  • A new type of anion called (tricyanoboryl)plumbate was created by reacting a boron compound with specific lead halides, showing impressive air stability at room temperature.
  • Different lead compounds yielded various forms of these anions, with some mixtures detected based on the types of lead halides used.
  • The (tricyanoboryl)plumbate anions can break down in water to produce other anion forms and lead derivatives, with the reaction speed influenced by the solution's pH and the presence of oxygen.

Article Abstract

A series of unprecedently air-stable (tricyanoboryl)plumbate anions was obtained by the reaction of the boron-centered nucleophile B(CN) with triorganyllead halides. Salts of the anions [R PbB(CN) ] (R=Ph, Et) were isolated and found to be stable in air at room temperature. In the case of Me PbHal (Hal=Cl, Br), a mixture of the anions [Me Pb{B(CN) } ] (n=1, 2) was obtained. The [Et PbB(CN) ] ion undergoes stepwise dismutation in aqueous solution to yield the plumbate anions [Et Pb{B(CN) } ] (n=1-4) and PbEt as by-product. The reaction rate increases with decreasing pH value of the aqueous solution or by bubbling O through the reaction mixture. Adjustment of the conditions allowed the selective formation and isolation of salts of all anions of the series [Et Pb{B(CN) } ] (n=2-4) including the homoleptic tetraanion [Pb{B(CN) } ] .

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9322310PMC
http://dx.doi.org/10.1002/anie.202202882DOI Listing

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