科研之友
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摘要
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每pyrrole N atom distance (Mg〞Np) is 2.071 (1) and the axial Mg〞O(H2O) bond length is 2.213 (1) . 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...羽 interactions. The 18-crown-6 molecule is disordered over two sets of sites with an occupancy ratio of 0.8:0.2.
