Protonation versus Oxonium Salt Formation: Basicity and Stability Tuning of Cyanoborate Anions - Forschungsportal der Justus-Liebig-Universität Gießen:

Journalartikel

Protonation versus Oxonium Salt Formation: Basicity and Stability Tuning of Cyanoborate Anions

Autorenliste: Kerpen, C; Sprenger, JAP; Herkert, L; Schäfer, M; Bischoff, LA; Zeides, P; Grüne, M; Bertermann, R; Brede, FA; Müller-Buschbaum, K; Ignat'ev, NV; Finze, M

Jahr der Veröffentlichung: 2017

Seiten: 2800-2804

Zeitschrift: Angewandte Chemie International Edition

Bandnummer: 56

Heftnummer: 10

ISSN: 1433-7851

DOI Link: https://doi.org/10.1002/anie.201611901

Verlag: Wiley

Abstract:
Anhydrous H[BH2(CN)(2)] crystallizes from acidic aqueous solutions of the dicyanodihydridoborate anion. The formation of H[BH2(CN)(2)] is surprising as the protonation of nitriles requires strongly acidic and anhydrous conditions but it can be rationalized based on theoretical data. In contrast, [BX(CN)(3)](-) (X= H, F) gives the expected oxonium salts (H3O)[BX(CN)(3)] while (H3O)[BF2(CN)(2)]/H[BF2(CN)(2)] is unstable. H[BH2(CN)(2)] forms chains via N-H . . . N bonds in the solid state and melts at 54 degrees C. Solutions of H[BH2(CN)(2)] in the room-temperature ionic liquid [EMIm][BH2(CN)(2)] contain the [(NC)H2BCN-H . . . NCBH2(CN)](-) anion and are unusually stable, which enabled the study of selected spectro-scopic and physical properties. [(NC)H2BCN-H . . . NCBH2( CN)](-) slowly gives H-2 and [(NC)H2BCN-BH(CN)(2)](-). The latter compound is a source of the free Lewis acid BH(CN)(2), as shown by the generation of [BHF(CN)(2)](-) and BH(CN)(2) py.

Autoren/Herausgeber

- Uni.-Prof. Dr. Klaus Müller-Buschbaum

Zitierstile

Harvard-Zitierstil: Kerpen, C., Sprenger, J., Herkert, L., Schäfer, M., Bischoff, L., Zeides, P., et al. (2017) Protonation versus Oxonium Salt Formation: Basicity and Stability Tuning of Cyanoborate Anions, Angewandte Chemie International Edition, 56(10), pp. 2800-2804. https://doi.org/10.1002/anie.201611901

APA-Zitierstil: Kerpen, C., Sprenger, J., Herkert, L., Schäfer, M., Bischoff, L., Zeides, P., Grüne, M., Bertermann, R., Brede, F., Müller-Buschbaum, K., Ignat'ev, N., & Finze, M. (2017). Protonation versus Oxonium Salt Formation: Basicity and Stability Tuning of Cyanoborate Anions. Angewandte Chemie International Edition. 56(10), 2800-2804. https://doi.org/10.1002/anie.201611901