A pyrrolyl-based triazolophane: a macrocyclic receptor with CH and NH donor groups that exhibits a preference for pyrophosphate anions.
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.
Sessler
Jonathan L
JL
Department of Chemistry and Biochemistry, 1 University Station-A5300, The University of Texas, Austin, Texas 78712-0165, USA.
Cai
Jiajia
J
Gong
Han-Yuan
HY
Yang
Xiaoping
X
Arambula
Jonathan F
JF
Hay
Benjamin P
BP
D000838:Anions; D011756:Diphosphates / Q000737:chemistry*; D006860:Hydrogen Bonding; D011758:Pyrroles / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
D000838:Anions; D011756:Diphosphates; D011758:Pyrroles; D014230:Triazoles