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  Die Tetracyanoborsäuren H[B(CN)4]·n H2O, n = 0, 1, 2 (The Tetracyanoboronic Acids H[B(CN)4]·n H2O, n = 0, 1, 2)

Küppers, T., Bernhardt, E., Lehmann, C. W., & Willner, H. (2007). Die Tetracyanoborsäuren H[B(CN)4]·n H2O, n = 0, 1, 2 (The Tetracyanoboronic Acids H[B(CN)4]·n H2O, n = 0, 1, 2). Zeitschrift für anorganische und allgemeine Chemie, 633(10), 1666-1672. doi:10.1002/zaac.200700097.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-9233-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0007-1CC1-0
Genre: Journal Article

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 Creators:
Küppers, Torsten1, Author
Bernhardt, Eduard1, Author
Lehmann, Christian W.2, Author           
Willner, Helge1, Author
Affiliations:
1FB C – Mathematik und Naturwissenschaften, Anorganische Chemie, Gaußstr. 20, D‐42119 Wuppertal, Deutschland, ou_persistent22              
2Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              

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Free keywords: Tetracyanoborates; Crystal structure; Vibrational spectroscopy; Thermal stability
 Abstract: Treatment of an aqueous solution of Na[B(CN)4] with an acidic cation exchange resin leads to a solution of the strong tetracyanoboronic acid. Evaporation of the solution at room temperature yields colourless single crystals of [H5O2][B(CN)4] (P ͞4n2, a=9.5830(2)Å, c=14.25440(3)Å, Z=1). Further drying of [H5O2][B(CN)4] (mp. 115 °C) in vacuum at 50 °C gives polycrystalline [H3O][B(CN)4] (P63mc, a=8.704(1)Å, c=6.152(1)Å, Z=2), which is thermally stable up to 145 °C. The anhydrous polycrystalline acid H[B(CN)4] is formed quantitatively by reacting Me3SiNCB(CN)3 with gaseous HCl. This acid starts to decompose at 190 °C with loss of HCN. All three acids were further characterized by vibrational spectroscopy, and elemental analysis.

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Language(s): deu - German
 Dates: 2007-08-01
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/zaac.200700097
 Degree: -

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Title: Zeitschrift für anorganische und allgemeine Chemie
  Abbreviation : Z. Anorg. Allg. Chem.
Source Genre: Journal
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Publ. Info: Leipzig, Weinheim : Verlag Johann Ambrosius Barth / Wiley-VCH
Pages: - Volume / Issue: 633 (10) Sequence Number: - Start / End Page: 1666 - 1672 Identifier: Other: 1521-3749
ISSN: 0044-2313
CoNE: https://pure.mpg.de/cone/journals/resource/954925453895