5,10,15,20-Tetra-p-phenylsulfonyporphinatocobalt(III), a water-soluble Co(III) porphyrin

Preparation, Crystal Structures, and Properties of a Series of Crystalline Tetra(4-sulfonatophenyl)porphyrinato Histidine 4f-3d Porphyrinic Compounds

“…Differently, the Sm2 ion binds to nine oxygen atoms of which five are from four sulfonic groups, one is from one histidine ligand, and three are from three coordinating water molecules, yielding a ninefold monocapped square antiprism. The bond distances from the cobalt ions to the pyrrole nitrogen atoms are in the range of 1.946(6)–1.992(6) Å in complex 1 , which are normal and comparable with those reported in the Cambridge Structural Database . The bond lengths of Sm–O locate in the range of 2.325(5)–2.707(8) Å which are normal and comparable with those documented for related species in the references .…”

Structural characterization of the water-soluble porphyrin complexes [FeII(TPPS) (NO•)]4─ and [μ-O-([FeIII(TPPS)])2]8─

“…Figure 7 shows the unit cell of (BTMA) 8 [μ-O-(Fe III (TPPS)) 2 ], containing six dimeric units. For each dimer, only one BTMA + cation is explicitly visible; the remaining counterions presented considerable disorder to be modelled, and a solvent mask had to be applied using the SQUEEZE algorithm in Olex2, as previously performed with [Co II (TPPS)] 3─ [ 8 ]. The sulfonate groups also show markedly greater disorder than in the nitrosyl complex structure.…”

“…In this case, a solvent mask had to be applied using the SQUEEZE algorithm in Olex2, as previously performed with [Co II (TPPS)] 3─ [ 8 ]. In this case, 1898 electrons were found in a volume of 8301 Å 3 in 1 void per unit cell.…”

“…All reported examples of iron nitrosyl porphyrin complexes were obtained in organic media. In fact, very few crystalline structures of water-soluble metalloporphyrins have been reported at all, including diaquo Ir(III) and Co(III) complexes of anionic TPPS 4─ [ 8 , 9 ], and both the monomeric and oxodimeric species of ferric [Fe III (TMPyP)] 5+ [ 10 , 11 ]. In most cases, both the obtention of crystalline material and the application of appropriate data refining algorithms resulted considerably more challenging than in organic media.…”