Diaqua(5,10,15,20-tetraphenylporphyrinato-κ⁴N)magnesium–18-crown-6 (1/1)

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⋯π inter­actions. The 18-crown-6 mol­ecule is disordered over two sets of sites with an occupancy ratio of 0.8:0.2.

Crystal structure of diaqua[5,10,15,20-tetrakis(4-bromophenyl)porphyrinato-κ4N]magnesium

“…In the Cambridge Structural Database (CSD, Version 5.35; Groom & Allen, 2014), there are six magnesium porphyrin structures with aqua ligands deposited. Four from these structures are monoaqua species, derived from [Mg(TOMePP)(H 2 O)] (TOMePP is the 5,10,15,20-tetrakis(4methoxyphenyl)porphyrinate ligand; Yang & Jacobson, 1991) and one is a diaqua derivative, [Mg(TPP)(H 2 O) 2 ]Á(18-C-6) where 18-C-6 is 18-crown-6 ether (Ezzayani et al, 2013). For the related porphyrin species [Mg(TPP)(4-pic) 2 ] (4-pic = 4picoline) and [Mg(TPP)(H 2 O)], see: McKee et al (1984) and Ong et al (1986), respectively.…”

Aqua(5,10,15,20-tetraphenylporphyrinato-κ4N)cadmium(II)–18-crown-6 (1/1)

“…In continuation of our research on the crystal structures of porphyrin complexes in general and the structures of metalloporphyrins resulting from the reaction of these species with the ether crown 18-crown-6 (Mansour et al, 2010;Ezzayani et al, 2013) we herein report the synthesis and crystal structure of the aqua-cadmium tetraphenylporhyrin derivative Rodesiler et al, 1985a and BOQQEE;Maldonado et al, 2009) (CDS, version 5.34, Allen, 2002.…”

(5,10,15,20-Tetraphenylporphyrinato-κ4N)zinc–18-crown-6 (1/1)

“…For related structures, see: Cheng & Scheidt (1995); Diskin-Posner et al (1999); Ezzayani et al (2013); Kojima et al (2009); Kumar et al (1997); Mansour et al (2010); Ricard et al (2001); Suijkerbuijk et al (2007); Toumi et al (2013). For the SIMU/ ISOR restraints used in the refinement, see: McArdle (1995).…”