QUADRUPOLAR [1(4)](META-PARA)(2)HETEROPHANES AND [1(4)]METAHETEROPHANES CONTAINING STABLE 3,5-BIS[1-METHYL-4(3)-PYRIDINIOMETHYL]-1,2,4-TRIAZOLATE BUILDING-BLOCK

Access to novel quadrupolar [1(4)] (meta-para)(2)azolophane with a 3,5-bis[1-methyl-4-pyridiniomethyl]-1,2,4-triazolate subunit reveals that the structural features conferred by the heterophane architecture lead to molecules that are stable to oxidation, in contrast with their building block. The stability of [1(4)]metaazolophanes is consistent with the betainic subunits.