title: Structure of a 4:1:4 supramolecular assembly of neutral TiiiiPO cavitands and tetrakis(N-methylpyridinium)porphyrin iodide.
abstract: Four tetraphosphorylated TiiiiPO cavitands 1 encapsulate the pyridinium heads of a tetrakis(N-methylpyridinium)porphyrin iodide to form a 4:1:4 (host)4/guest4+/4I- complex. The single-crystal X-ray diffraction analysis shows the arrangement of the four cavities bound to the CH3N+ groups of the porphyrin moiety and the four iodide anions nested between the phenethyl substituents of the hosts. 1H NMR investigations show that the structure is preserved in chloroform solution and underscore the effect of the counteranions.
authors.affiliation: Centro di Eccellenza in Biocristallografia, Dipartimento di Scienze Chimiche, Università di Trieste, via Licio Giorgieri 1, 34127 Trieste, Italy.
authors.forename: Rita
authors.initials: R
authors.lastname: De Zorzi
authors.forename: Béatrice
authors.initials: B
authors.lastname: Dubessy
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Mulatier
authors.forename: Silvano
authors.initials: S
authors.lastname: Geremia
authors.forename: Lucio
authors.initials: L
authors.lastname: Randaccio
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Dutasta
mesh_terms: D004988:Ethers, Cyclic / Q000737:chemistry*; D007454:Iodides / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008958:Models, Molecular; D010755:Organophosphates / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D011759:Pyrrolidines / Q000737:chemistry*; D012118:Resorcinols / Q000737:chemistry*
chemical_list: D004988:Ethers, Cyclic; D007454:Iodides; D010755:Organophosphates; D011166:Porphyrins; D011759:Pyrrolidines; D012118:Resorcinols; C442939:cavitand