Acta Cryst. (2007). E63, m2013-m2014  [ doi:10.1107/S1600536807030905 ]

{6,6'-Diethoxy-2,2'-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}trinitratosamarium(III)copper(II)

Y. Sui, D.-Y. He, X.-N. Fang, L. Chen and J.-L. Peng

Abstract: A heteronuclear Cu^II-Sm^III complex (systematic name: {6,6'-diethoxy-2,2'-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato-1⁴O¹,O^1',O⁶,O^6':2⁴O¹,N,N',O^1'}trinitrato-1⁶O,O'- samarium(III)copper(II)), [CuSm(C₂₀H₂₂N₂O₄)(NO₃)₃], with the hexadentate Schiff base compartmental ligand N,N'-bis(3-ethoxysalicylidene)ethylene-1,2-diamine, has been synthesized and structurally characterized. The Cu and Sm atoms are doubly bridged by two phenolate O atoms provided by the Schiff base ligand. The coordination of the Cu atom is square planar, formed by two imine N and two phenolate O atoms. The Sm^III atom has a decacoordination environment, formed by the phenolate O atoms, two ethoxy O atoms and two O atoms each from the three nitrates. No classical intermolecular hydrogen bonds are found. Some weak C-HO and OCu interactions [OCu = 3.167 (4) Å] generate a two-dimensional zigzag sheet.

Online 30 June 2007

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