E. Alcalde et al., QUADRUPOLAR [1(4)](META-PARA)(2)HETEROPHANES AND [1(4)]METAHETEROPHANES CONTAINING STABLE IS[1-METHYL-4(3)-PYRIDINIOMETHYL]-1,2,4-TRIAZOLATE BUILDING-BLOCK, Chemistry Letters, (10), 1995, pp. 865-866
Access to novel quadrupolar [1(4)] (meta-para)(2)azolophane with a 5-b
is[1-methyl-4-pyridiniomethyl]-1,2,4-triazolate subunit reveals that t
he structural features conferred by the heterophane architecture lead
to molecules that are stable to oxidation, in contrast with their buil
ding block. The stability of [1(4)]metaazolophanes is consistent with
the betainic subunits.