8,16,24,32,40,48-Hexamethoxy[2.6]metacyclophane-1,9,17,25,33,41-hexayne: a novel near-planar ammonium-selective ionophore.
The titled cyclophane (cyclic [6]metaphenylacetylene) with six methoxy groups inside the cavity has a nearly planar carbon framework, forms open-channel structures in the crystal, and exhibits an ammonium-selective ionophoric property in spite of the considerably large cavity.
Hosokawa
Y
Y
Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Kawase
T
T
Oda
M
M