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Acta Crystallogr Sect E Struct Rep Online. 2012 Dec 1;68(Pt 12):m1557-8. doi: 10.1107/S1600536812048052. Epub 2012 Nov 30.


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  • 1Laboratoire de Physico-chimie des Matériaux, Université de Monastir, Faculté des Sciences de Monastir, Avenue de l'environnement, 5019 Monastir, Tunisia.


The asymmetric unit of the title compound, [Cd2Na2(N3)2(C44H28N4)2(C12H24O6)2], consists of one half of the dimeric complex; the tetra-nuclear mol-ecule lies about an inversion centre. The Cd(II) atom is coordinated by the four pyrrole N atoms of the 5,10,15,20-tetra-phenyl-porphyrinate ligand and one N atom of the axial azide ligand in a square-pyramidal geometry. The azide group is also linked to the Na(I) atom, which is surrounded by one 18-crown-6 molecule and additionally bonded to a second 18-crown-6 molecule trans to the azide group. The porphyrin core exhibits a major doming distortion (∼40%) and the crystal structure is stabilized by weak C-H⋯π inter-actions. The mol-ecular structure features weak intra-molecular hydrogen bonds: two O-H⋯O inter-actions within the 18-crown-6 mol-ecule and one C-H(18-crown-6)⋯N(azido) contact.

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