title: Diaqua-(5,10,15,20-tetra-phenyl-porphyrinato-κ(4)N)magnesium-18-crown-6 (1/1).
abstract: In the title compound, [Mg(C(44)H(28)N(4))(H(2)O)(2)]·C(12)H(24)O(6), the Mg(II) cation lies on an inversion center and is octa-hedrally coordinated by the four N atoms of the deprotonated tetra-phenyl-porphyrin (TPP) ligand and by two water mol-ecules. The asymmetric unit contains one half of the [Mg(TPP)(H(2)O)(2)] complex and one half of an 18-crown-6 mol-ecule. The average equatorial magnesium-pyrrole N atom distance (Mg-N(p)) is 2.071 (1) Å and the axial Mg-O(H(2)O) bond length is 2.213 (1) Å. The crystal packing is stabilized by two O-H⋯O hydrogen bonds between coordinating water mol-ecules and adjacent 18-crown-6 mol-ecules, and exhibits a one-dimensional supramolecular structure along the a axis. The supramolecular architecture is futher stabilized by weak C-H⋯π inter-actions. The 18-crown-6 mol-ecule is disordered over two sets of sites with an occupancy ratio of 0.8:0.2.
authors: Laboratoire de Physico-chimie des Matériaux, Université de Monastir, Faculté des Sciences de Monastir, Avenue de l'environnement, 5019 Monastir,  Tunisia.
authors: Khaireddine
authors: K
authors: Ezzayani
authors: Soumaya
authors: S
authors: Nasri
authors: Mohamed Salah
authors: MS
authors: Belkhiria
authors: Jean-Claude
authors: JC
authors: Daran
authors: Habib
authors: H
authors: Nasri