title: Novel C3v-symmetrical N7-Hexahomotriazacalix[3]cryptand: a highly efficient receptor for halide anions.
abstract: [structure: see text] We report the synthesis of a novel C(3)(v)()-symmetrical N(7)-hexahomotriazacalix[3]cryptand (1). Compound 1 was shown to be in a fixed cone conformation by (1)H NMR spectroscopy and X-ray single-crystal structure determination. Complexation studies showed that 1 is a selective receptor for halide ions. The effects of zinc metal cation on the receptor (1-Zn(2+)) upon anion recognition are also shown.
authors.affiliation: Supramolecular Chemistry Research Unit and Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
authors.forename: Chatthai
authors.initials: C
authors.lastname: Kaewtong
authors.forename: Saowarux
authors.initials: S
authors.lastname: Fuangswasdi
authors.forename: Nongnuj
authors.initials: N
authors.lastname: Muangsin
authors.forename: Narongsak
authors.initials: N
authors.lastname: Chaichit
authors.forename: Jacques
authors.initials: J
authors.lastname: Vicens
authors.forename: Buncha
authors.initials: B
authors.lastname: Pulpoka