title: A pyrrolyl-based triazolophane: a macrocyclic receptor with CH and NH donor groups that exhibits a preference for pyrophosphate anions.
abstract: A pyrrolyl-based triazolophane, incorporating CH and NH donor groups, acts as a receptor for the pyrophosphate anion in chloroform solution. It shows selectivity for this trianion, followed by HSO(4)(-) > H(2)PO(4)(-) > Cl(-) > Br(-) (all as the corresponding tetrabutylammonium salts), with NH-anion interactions being more important than CH-anion interactions. In the solid state, the receptor binds the pyrophosphate anion in a clip-like slot via NH and CH hydrogen bonds.
authors.affiliation: Department of Chemistry and Biochemistry, 1 University Station-A5300, The University of Texas, Austin, Texas 78712-0165, USA.
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler
authors.forename: Jiajia
authors.initials: J
authors.lastname: Cai
authors.forename: Han-Yuan
authors.initials: HY
authors.lastname: Gong
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Yang
authors.forename: Jonathan F
authors.initials: JF
authors.lastname: Arambula
authors.forename: Benjamin P
authors.initials: BP
authors.lastname: Hay
mesh_terms: D000838:Anions; D011756:Diphosphates / Q000737:chemistry*; D006860:Hydrogen Bonding; D011758:Pyrroles / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
chemical_list: D000838:Anions; D011756:Diphosphates; D011758:Pyrroles; D014230:Triazoles