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The Zn(II) atom in the cation of the title salt, [Zn(C(2)H(3)O(2))(C(18)H(40)N(4))]ClO(4), is five-coordinated by the four N atoms of the macrocycle and the O atom of the monodentate acetate ligand. The N(4)O donor set is based on a trigonal bipyramid with two N atoms occupying axial positions [N-Zn-N = 170.89 (16)°]. The perchlorate anions are associated with the cations via N-H⋯O hydrogen bonds; intra-molecular N-H⋯O(acetate) inter-actions are also observed. The neutral aggregates are connected into an helical chain along the b axis via N-H⋯O(acetate) hydrogen bonds. The perchlorate anion was found to be disordered about a pseudo-threefold axis: the major component of the disorder had a site occupancy factor of 0.692 (11).

acta crystallographica. section e

(Acetato-κO)(2,5,5,7,9,12,12,14-octamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)zinc perchlorate