Acta Cryst. (2005). E61, m2018-m2020  [ doi:10.1107/S160053680502828X ]

A new heterotrinuclear macrocyclic complex: bis(-diethyl 5,6,7,8,15,16-hexahydro-6,7-dioxo-5,8,14,17-tetraazadibenzo[a,g]cyclotetradecine-13,18-dicarboxylato)-1⁴N:2²O⁶,O⁷;2O⁶,O⁷:3⁴N-dimethanoldinickel(II)zinc(II) bis(perchlorate)

X.-Z. Li, J.-H. He, W.-Q. Zhang and B.-L. Liu

Abstract: The title compound, [Ni₂Zn(C₂₄H₂₂N₄O₆)₂(CH₄O)₂](ClO₄)₂, was synthesized using a mononuclear complex ligand NiL (L is diethyl 5,6,7,8,15,16-hexahydro-6,7-dioxo-5,8,14,17-tetraazadibenzo[a,g]cyclotetradecine-13,18-dicarboxylate), Zn(ClO₄)₂·6H₂O and CH₃OH. X-ray single-crystal analysis reveals that the Zn²⁺ ion is in a slightly distorted octahedral O₆ environment. The trinuclear complex cation is centrosymmetric. The Zn²⁺ and both Ni²⁺ ions are bridged by the oxamide group from the macrocyclic ligand L. Intermolecular O-HO hydrogen bonds exist between the perchlorate anion and the complex cation, and - interactions organize the trinuclear cations to form supramolecular one-dimensional chains in the crystal structure.

Online 17 September 2005

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