Keywords: Sydnone circle structure.png Chemical structure of sydnone Own 2007-11-17 Cacycle GFDL-self-no-disclaimers relicense Comments High-resolution black/white PNG made with ChemDraw and IrfanView ” see WikiProject Chemistry - structure drawing for detailed instructions Please drop me a note if you need the source file Mesoionic compounds Images created or edited with IrfanView |