Abstract

MARTINEZ, M. A. et al. Two isostructural complexes of Co(II) and Zn(II) with lapacholate, dimethylformamide and water, [M(Lap)2(DMF)(H2O)]. An. Asoc. Quím. Argent. [online]. 2005, vol.93, n.4-6, pp.183-193. ISSN 0365-0375.

The complexes of the title were obtained from lapachol, 2-hydroxy-3-(3-methyl-2- butenyl)-1,4-naphtoquinone, C15H14O3,(LapH), dissolved in dimethylformamide (DMF), and a suspension of cobalt(II) acetate tetrahydrate in 96º ethanol, in one case, and a water solution of zinc acetate dihydrate, in the other. The complexes formed separated from the mother liquors as red-brown, crystalline solids, which were adequately washed and dried. Both complexes, of common formula: [M(Lap)2(DMF)(H2O)], are isostructural, belonging to the triclinic, (No. 2) space group, with cell constants a = 10.4859(3)Å, b= 12.7319(3) Å, c = 12.8211(3) Å, α = 119.656(2)º, β = 94.480º, γ = 94.181(2)º , Z = 2, for the cobalt complex and a = 10.529(3) Å, b = 12.767(3) Å, c = 12.964(3) Å, α = 119.73(3)º, β = 92.47(3)º, γ = 93.87(3)º, Z = 2, for the zinc complex. Some chemical and spectroscopic properties are also reported.

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