@article{HaeringKerpenRibbecketal.2022,
  author    = {H{\"a}ring, Mathias and Kerpen, Christoph and Ribbeck, Tatjana and Hennig, Philipp T. and Bertermann, R{\"u}diger and Ignat'ev, Nikolai V. and Finze, Maik},
  title     = {Dismutation of Tricyanoboryllead Compounds: The Homoleptic Tetrakis(tricyanoboryl)plumbate Tetraanion},
  series = {Angewandte Chemie},
  volume    = {61},
  journal   = {Angewandte Chemie},
  number    = {24},
  doi       = {10.1002/anie.202202882},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-318257},
  year      = {2022},
  abstract  = {A series of unprecedently air-stable (tricyanoboryl)plumbate anions was obtained by the reaction of the boron-centered nucleophile B(CN)\(_{3}\)\(^{2-}\) with triorganyllead halides. Salts of the anions [R\(_{3}\)PbB(CN)\(_{3}\)]\(^{-}\) (R=Ph, Et) were isolated and found to be stable in air at room temperature. In the case of Me\(_{3}\)PbHal (Hal=Cl, Br), a mixture of the anions [Me\(_{4-n}\)Pb{B(CN)\(_{3}\)}\(_{n}\)]\(^{n-}\) (n=1, 2) was obtained. The [Et\(_{3}\)PbB(CN)\(_{3}\)]- ion undergoes stepwise dismutation in aqueous solution to yield the plumbate anions [Et4\(_{4-n}\)Pb{B(CN)\(_{3}\)}\(_{n}\)]\(^{n-}\) (n=1-4) and PbEt\(_{4}\) as by-product. The reaction rate increases with decreasing pH value of the aqueous solution or by bubbling O\(_{2}\) through the reaction mixture. Adjustment of the conditions allowed the selective formation and isolation of salts of all anions of the series [Et\(_{4-n}\)Pb{B(CN)\(_{3}\)}\(_{n}\)]\(^{n-}\) (n=2-4) including the homoleptic tetraanion [Pb{B(CN)\(_{3}\)}\(_{4}\)]\(^{4-}\).},
  language  = {en}
}
@article{DrischBischoffSprengeretal.2020,
  author    = {Drisch, Michael and Bischoff, Lisa A. and Sprenger, Jan A. P. and Hennig, Philipp T. and Wirthensohn, Raphael and Landmann, Johannes and Konieczka, Szymon Z. and Hailmann, Michael and Ignat'ev, Nikolai V. and Finze, Maik},
  title     = {Innovative Syntheses of Cyano(fluoro)borates: Catalytic Cyanation, Electrochemical and Electrophilic Fluorination},
  series = {Chemistry - A European Journal},
  volume    = {26},
  journal   = {Chemistry - A European Journal},
  number    = {50},
  doi       = {10.1002/chem.202002324},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-216027},
  pages     = {11625 -- 11633},
  year      = {2020},
  abstract  = {Different types of high-yield, easily scalable syntheses for cyano(fluoro)borates Kt[BF\(_{n}\)(CN)\(_{4-n}\)] (n=0-2) (Kt=cation), which are versatile building blocks for materials applications and chemical synthesis, have been developed. Tetrafluoroborates react with trimethylsilyl cyanide in the presence of metal-free Br{\o}nsted or Lewis acid catalysts under unprecedentedly mild conditions to give tricyanofluoroborates or tetracyanoborates. Analogously, pentafluoroethyltrifluoroborates are converted into pentafluoroethyltricyanoborates. Boron trifluoride etherate, alkali metal salts, and trimethylsilyl cyanide selectively yield dicyanodifluoroborates or tricyanofluoroborates. Fluorination of cyanohydridoborates is the third reaction type that includes direct fluorination with, for example, elemental fluorine, stepwise halogenation/fluorination reactions, and electrochemical fluorination (ECF) according to the Simons process. In addition, fluorination of [BH(CN)\(_{2}\){OC(O)Et}]\(^{-}\) to result in [BF(CN)\(_{2}\){OC(O)Et}]\(^{-}\) is described.},
  language  = {en}
}