Crystal structure of the complex of 2,4,6-tri-ethyl-1,3,5-tris-[(4-methyl-1 H-indazol-1-yl)meth-yl]-benzene with NH4PF6

Felix Fuhrmann; Eric Meier; Wilhelm Seichter; Monika Mazik

doi:10.1107/S2056989022006867

Crystal structure of the complex of 2,4,6-tri-ethyl-1,3,5-tris-[(4-methyl-1 H-indazol-1-yl)meth-yl]-benzene with NH₄PF₆

Acta Crystallogr E Crystallogr Commun. 2022 Jul 12;78(Pt 8):785-788. doi: 10.1107/S2056989022006867. eCollection 2022 Aug 1.

Authors

Felix Fuhrmann¹, Eric Meier¹, Wilhelm Seichter¹, Monika Mazik¹

Affiliation

¹ Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany.

Abstract

The complex of 2,4,6-tri-ethyl-1,3,5-tris-[(4-methyl-1H-indazol-1-yl)meth-yl]-benz-ene with ammonium hexa-fluorophosphate, C₃₉H₄₂N₆·NH₄ ⁺·PF₆ ^-, crystallizes in the monoclinic space group P2₁ with two mol-ecules of the receptor, two NH₄ ⁺ and two PF₆ ^- ions in the asymmetric unit. In each of the complexes the ammonium ion resides in the cavity of the receptor mol-ecule and is fixed in its position by three N-H⋯N bonds, while the remaining hydrogen atom of the cation acts as a bifurcated binding site for N-H⋯F bonding to the counter-anion. The crystal is composed of one-dimensional supra-molecular aggregates extending along the a-axis direction.

Keywords: ammonium complex; crystal structure; tripodal receptor.