A linear trinuclear Co^II-Co^II-Co^II complex with μ-acetate bridges: di-μ-acetato-bis[μ-N,N′-bis(salicylidene)-1,4-butanediaminato]tricobalt(II)

Authors: You, Zhong-Lu; Zhu, Hai-Liang; Liu, Wei-Sheng

Source: Acta Crystallographica Section E, Volume 60, Number 12, December 2004 , pp. m1900-m1902(3)

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Abstract:

The title linear trinuclear complex, di-μ-acetato-1:2κ²O,O′;2:3κ²O,O′-bis{2,2′-[1,4-butanediylbis(nitrilomethylidyne)]diphenolato}-1:2κ⁶O,N,N,O′:O,O′;2,3κ⁶O,O′:O,N,N,O′-tricobalt(II), [Co₃(C₁₈H₁₈N₂O₂)₂(C₂H₃O₂)₂], was prepared by the reaction of the tetradentate Schiff base ligand bis(salicylidene)-1,4-diaminobutane and Co(CH₃COO)₂·2H₂O in a methanol solution. The central Co^II ion, which is located on an inversion center, has a distorted octahedral coordination involving four bridging O atoms from two Schiff base ligands in the equatorial plane and one O atom from each bridging acetate group in the axial positions. The coordination around the terminal Co^II ion is irregular square pyramidal, with two O and two N atoms of the ligand in the basal plane and one O atom from an acetate group in the apical position. The acetate bridges linking the central and terminal Co^II ions are mutually trans. The closest Co…Co separation is 3.125 (4) Å.

Document Type: Research article

DOI: http://dx.doi.org/10.1107/S1600536804029605

Publication date: 2004-12-01