Synthesis and crystal structure of two manganese-based 12-metallacrown-4 complexes: Na2 (3-chloro-benzoate)2 [12-MCMn(III)N(shi) -4](DMF)6 and MnNa(3-chloro-benzoate)3 [12-MCMn(III)N(shi) -4](DMF)(H2 O)4 ·4DMF·0.72H2 O

Acta Crystallographica. Section E, Crystallographic Communications
Curtis M Zaleski, Matthias Zeller

Abstract

Similar synthetic schemes yield two different metallacrown (MC) complexes: bis-(μ-3-chloro-benzoato)hexa-kis-(di-methyl-formamide)-tetra-kis-(μ4-N,2-dioxido-benzene-1-carboximidato)tetra-manganese(III)disodium(I), [Mn4Na2(C7H4ClO2)2(C7H4NO3)4(C3H7NO)6] or Na2(3-chloro-benzoate)2[12-MCMn(III)N(shi)-4](DMF)6, 1, and tetra-μ-aqua-tris-(μ-3-chloro-benzoato)(di-methyl-formamide)-tetra-kis-(μ4-N,2-dioxido-benzene-1-carboximidato)penta-manganese(III)sodi-um(I) di-methyl-formamide tetra-solvate 0.72-hydrate, [Mn5Na(C7H4ClO2)3(C7H4NO3)4(C3H7NO)(H2O)4]·4C3H7NO·0.718H2O or MnNa(3-chloro-benzo-ate)3[12-MCMn(III)N(shi)-4](DMF)(H2O)4·4DMF·0.72H2O, 2, where shi3- is salicyl-hydrox-imate and DMF is N,N-di-methyl-formamide. Both complexes have the same framework consisting of four MnIII ions in the MC ring and four shi3- ligands, resulting in an overall square-shaped mol-ecule. The MnIII ions are either five- or six-coordinate with elongated bond lengths in the apical or axial direction, respectively. The structure of 1 is nearly planar, and the MC binds two Na+ ions on opposite faces of the MC central cavity. The 3-chloro-benzoate anions also bind on opposite faces of the MC and form bridges between the central Na+ ions and the ring MnIII ions...Continue Reading

References

Oct 24, 2001·Inorganic Chemistry·Mark Pinsky, David Avnir
Feb 12, 2004·Journal of the American Chemical Society·David CasanovaSantiago Alvarez
Nov 15, 2007·Chemical Reviews·Gellert MezeiVincent L Pecoraro
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Sep 10, 2011·Chemical Communications : Chem Comm·Evangelia S KoumousiTheocharis C Stamatatos
Apr 6, 2012·Journal of Applied Crystallography·Christian B HübschleBirger Dittrich
May 31, 2013·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Simon ParsonsTrixie Wagner
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Jun 20, 2015·Journal of Applied Crystallography·Lennard KrauseDietmar Stalke
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