title: Hydrogen-bonded three-dimensional network of a lanthanum(III) exocyclic complex with 5,10,15,20-tetra-4-pyridylporphyrin.
abstract: In the complex diaquatetranitrato[5-(pyridinium-4-yl)-10,15,20-tri-4-pyridylporphyrin]lanthanum(III) 1,2-dichlorobenzene trisolvate, [La(NO3)4(C40H27N8)(H2O)2].3C6H4Cl2, the lanthanum ion is coordinated to one of the peripheral pyridyl substituents of the porphyrin entity. Units of the complex are interlinked to one another in three dimensions by a network of O-H...N, O-H...O and N-H...O hydrogen bonds between the water ligands, nitrate ions, and pyridyl and pyridinium groups of adjacent species. This is the first structural report of an exocyclic complex of the tetrapyridylporphyrin ligand with any lanthanide ion and its self-assembly into a three-dimensional architecture sustained by hydrogen bonds.
authors.affiliation: School of Chemistry, Sackler Faculty of Exact Sciences, Tel-Aviv University, Ramat-Aviv, 69978 Tel-Aviv, Israel.
authors.forename: Sophia
authors.initials: S
authors.lastname: Lipstman
authors.forename: Israel
authors.initials: I
authors.lastname: Goldberg