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Steiner T, Mason SA. Short N+--H...Ph hydrogen bonds in ammonium tetraphenylborate characterized by neutron diffraction. Acta Crystallogr B. 2000;56:254-60doi: 10.1107/s0108768199012318.
Steiner, T., & Mason, S. A. (2000). Short N+--H...Ph hydrogen bonds in ammonium tetraphenylborate characterized by neutron diffraction. Acta crystallographica. Section B, Structural science, 56254-60. https://doi.org/10.1107/s0108768199012318
Steiner, and Mason. "Short N+--H...Ph hydrogen bonds in ammonium tetraphenylborate characterized by neutron diffraction." Acta crystallographica. Section B, Structural science vol. 56 (2000): 254-60. doi: https://doi.org/10.1107/s0108768199012318
Steiner T, Mason SA. Short N+--H...Ph hydrogen bonds in ammonium tetraphenylborate characterized by neutron diffraction. Acta Crystallogr B. 2000 Apr;56:254-60. doi: 10.1107/s0108768199012318. PMID: 10794279.
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Acta Crystallogr B. 2000 Apr;56:254-60. doi: 10.1107/s0108768199012318.

Short N+--H...Ph hydrogen bonds in ammonium tetraphenylborate characterized by neutron diffraction.

Acta crystallographica. Section B, Structural science

Steiner, Mason

Affiliations

  1. Institut fur Chemie--Krisallographie, Freie Universitat Berlin, Germany. [email protected]

PMID: 10794279 DOI: 10.1107/s0108768199012318

Abstract

The crystal structures of ammonium tetraphenylborate, NH4+.BPh4-, are determined by neutron diffraction at 20 and 293 K. At both temperatures, all four N-H vectors of the ammonium ion are time-average-oriented at the midpoints of the phenyl rings of neighboring anions. The N-H...Ph distances, H...M 2.067 and N...M 3.023 A, are exceptionally short (M = aromatic midpoint). Even at 20 K the ammonium ion performs large amplitude motions which allow the N-H vectors to sample the entire face of the aromatic system.

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