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Acta Cryst. (2013). E69, m114-m115
[ doi:10.1107/S1600536813001219 ]

Diaqua(5,10,15,20-tetraphenylporphyrinato-[kappa]4N)magnesium-18-crown-6 (1/1)

K. Ezzayani, S. Nasri, M. S. Belkhiria, J.-C. Daran and H. Nasri

Abstract: In the title compound, [Mg(C44H28N4)(H2O)2]·C12H24O6, the MgII cation lies on an inversion center and is octahedrally coordinated by the four N atoms of the deprotonated tetraphenylporphyrin (TPP) ligand and by two water molecules. The asymmetric unit contains one half of the [Mg(TPP)(H2O)2] complex and one half of an 18-crown-6 molecule. The average equatorial magnesium-pyrrole N atom distance (Mg-Np) is 2.071 (1) Å and the axial Mg-O(H2O) bond length is 2.213 (1) Å. The crystal packing is stabilized by two O-H...O hydrogen bonds between coordinating water molecules and adjacent 18-crown-6 molecules, and exhibits a one-dimensional supramolecular structure along the a axis. The supramolecular architecture is futher stabilized by weak C-H...[pi] interactions. The 18-crown-6 molecule is disordered over two sets of sites with an occupancy ratio of 0.8:0.2.


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