title: Ethyl-enediammonium tetra-kis({2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II)) bis-(perchlorate) dimethyl-formamide monosolvate.
abstract: The title compound, (C(2)H(10)N(2))[Ni(C(16)H(14)N(2)O(2))](4)(ClO(4))(2)·C(3)H(7)NO, crystallizes with four Ni(salen) mol-ecules {salen is 2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolate}, one ethyl-enediammonium cation (actually two half-cations, each located on a center of inversion), two perchlorate anions and one dimethyl-formamide solvent mol-ecule in the asymmetric unit. Each Ni(II) cation in the Ni(salen) complex is four-coordinated by two imine N atoms and two phenolate O atoms from the tetra-dentate ligand. The Ni(salen) units form parallel slipped stacks with Ni⋯Ni separations of 3.4541 (4) and 3.6442 (6) Å. The crystal packing is stabilized by inter-molecular hydrogen bonds between the ammonium H atoms and the perchlorate and salen O atoms, which generate a three-dimensional structure.
authors.affiliation: Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA.
authors.forename: Gervas
authors.initials: G
authors.lastname: Assey
authors.forename: Yilma
authors.initials: Y
authors.lastname: Gultneh
authors.forename: Ray J
authors.initials: RJ
authors.lastname: Butcher