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metal-organic compounds
Crystals of tetrakis(4-iodophenyl)porphyrin chloroform 0.85-solvate, C44H26I4N4·0.85CHCl3, (I), and [tetrakis(4-iodophenyl)porphyrinato]zinc(II), [Zn(C44H24I4N4)], (II), reveal different modes of supramolecular organization. I
I attractions provide a significant contribution to the layered interporphyrin arrangement in (I), wherein all molecules have the same orientation. Weak axial coordinations of the I atoms to the Zn centres appear to have a dominant effect on the formation of two-dimensional supramolecular assemblies in (II), with a herring-bone arrangement of the metalloporphyrin species. Both molecules are located on inversion centres.
I attractions provide a significant contribution to the layered interporphyrin arrangement in (I), wherein all molecules have the same orientation. Weak axial coordinations of the I atoms to the Zn centres appear to have a dominant effect on the formation of two-dimensional supramolecular assemblies in (II), with a herring-bone arrangement of the metalloporphyrin species. Both molecules are located on inversion centres.organic compounds
Molecules of the title compound, porphyrin-54,104,154,204-tetrabenzoic acid, C48H30N4O8, lie on sites of 2/m symmetry in the space group Cmca. The crystals consist of doubly interwoven two-dimensional supramolecular arrays sustained by multiple (COOH)2 cyclic dimeric hydrogen bonds, each molecule of the porphyrintetrabenzoic acid coordinating to four neighbouring species. This structure, which encloses substantial spaces occupied by disordered dimethylformamide solvent molecules, represents yet another supramolecular isomer of this porphyrin.
organic compounds
Crystals of the title compounds, 20-(4-pyridyl)porphyrin-54,104,154-tribenzoic acid–dimethyl sulfoxide (2/5), C46H29N5O6·2.5C2H6OS, (I), and 20-(4-pyridyl)porphyrin-54,104,154-tribenzoic acid–4-acetylpyridine–tetrahydrofuran (1/2/10), C46H29N5O6·2C7H7NO·10C4H8O, (II), consist of hydrogen-bonded supramolecular chains of porphyrin units solvated by molecules of dimethyl sulfoxide [in (I)] and 4-acetylpyridine [in (II)]. In (I), these chains consist of heterogeneous arrays with alternating porphyrin and dimethyl sulfoxide species, being sustained by COOHO=S hydrogen bonds. They adopt a zigzag geometry and link on both sides to additional molecules of dimethyl sulfoxide. In (II), the chains consist of homogeneous linear supramolecular arrays of porphyrin units, which are directly connected to one another via COOHN(pyridyl) hydrogen bonds. As in the previous case, these arrays are solvated on both sides by molecules of the 4-acetylpyridine ligand via similar COOH(porphyrin)N(ligand) hydrogen bonds. The two crystal structures contain wide interporphyrin voids, which accommodate disordered/diffused solvent molecules, viz. dimethyl sulfoxide in (I) and tetrahydrofuran in (II).
O=S hydrogen bonds. They adopt a zigzag geometry and link on both sides to additional molecules of dimethyl sulfoxide. In (II), the chains consist of homogeneous linear supramolecular arrays of porphyrin units, which are directly connected to one another via COOHN(pyridyl) hydrogen bonds. As in the previous case, these arrays are solvated on both sides by molecules of the 4-acetylpyridine ligand via similar COOH(porphyrin)N(ligand) hydrogen bonds. The two crystal structures contain wide interporphyrin voids, which accommodate disordered/diffused solvent molecules, viz. dimethyl sulfoxide in (I) and tetrahydrofuran in (II).
