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

The complex of 2,4,6-tri-ethyl-1,3,5-tris-[(4-methyl-1-indazol-1-yl)meth-yl]-benz-ene with ammonium hexa-fluorophosphate, CHN·NH ·PF , crystallizes in the monoclinic space group 2 with two mol-ecules of the receptor, two NH and two PF 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 -axis direction.