title: 2,13-Dibenzyl-5,16-diethyl-2,6,13,17-tetra-aza-tricyclo-[16.4.0.0]docosan-2-ium nitrate.
abstract: One of the tertiary amine atoms has been protonated in the title salt, C(36)H(57)N(4) (+)·NO(3) (-). The four N atoms of the macrocycle are almost coplanar (r.m.s. deviation = 0.0053 Å), a result correlated with the formation of intra-molecular N-H⋯N and N-H⋯(N,N) hydrogen bonds. With respect to this plane, the benzyl groups lie to either side; a similar arrangement pertains for the cyclo-hexyl rings (each with a chair conformation). Helical supra-molecular chains are evident in the crystal, whereby alternating cations and anions are linked by C-H⋯O inter-actions. The chains are consolidated into supra-molecular arrays in the ab plane via C-H⋯π contacts involving both benzene rings.
authors.forename: Jong-Ha
authors.initials: JH
authors.lastname: Choi
authors.forename: Md Abdus
authors.initials: MA
authors.lastname: Subhan
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink
references.citation: Inorg Chem. 2006 Sep 18;45(19):7821-7
references.pmid: 16961374
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677