W0313

Structural Variations in the Sydnone Ring. Gordon Riddle, David A. Grossie, and Kenneth Turnbull, Dept. of Chemistry, Wright State Univ., Dayton, Ohio 45435.

Sydnones are, in most cases, extremely stable crystalline compounds that exhibit a distinct polarity. Electrophilic substitution occurs on the five – membered heterocyclic ring at the C-4 and N-3 positions. The structural influences of placing substituents at the C-4 and N-3 positions on the sydnone ring have been examined.

A wide range of substituents have been placed on the sydnone ring. These molecules and their structural variations have been studied by the use of single-crystal x-ray diffraction.