Bis{μ-2-[(1,5-diaza-1-cyclooctyl)methyl]phenolato-N,N′,O:O}bis[chlorozinc(II)] diacetone solvate: design of a square-pyramidal ZnN2O2Cl complex

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The title complex, [Zn(2)(C(13)H(19)N(2)O)(2)Cl(2)].2C(3)H(6)O, resides on a crystallographic inversion center. The two Zn(II) centers bridged by the phenoxo groups are in pentacoordinated distorted square-pyramidal coordination environments with an intramolecular Zn...Zn distance of 3.175 (3) A. The mesocyclic ligand takes a boat-chair conformation and an H atom from the 1,5-diazacyclooctane ring effectively blocks the axial coordination site opposite the Cl ligand to form the ZnN(2)O(2)Cl geometry. The crystal structure is stabilized by a N-H...O hydrogen bond between the amino group and an acetone molecule.