Press “Calculate” to generate the resonance structures. Input the Molecular Formula of the compound, e.g., C2H6O for ethanol. Input the Formal Charge if any, e.g., 0 if there is no formal charge. Click on the Calculate button to see the generated resonance structures. The calculator takes the molecular formula and formal charge as inputs.

ChemSpider record containing structure, synonyms, properties, vendors and database links for vinyl ketone, 1890-28-4, UCUUFSAXZMGPGH-UHFFFAOYSA-N

2-Cyclopenten-1-one | C5H6O | CID 13588 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Applications include the study of biomolecule:ligand complexes, free energy calculations, structure-based drug design and refinement of x-ray crystal complexes.

ChemSpider record containing structure, synonyms, properties, vendors and database links for Cyclopentenone, 930-30-3, 213-213-0, BZKFMUIJRXWWQK-UHFFFAOYSA-N

Objectives After completing this section, you should be able to draw the resonance structures of molecules or ions that exhibit delocalization. determine the relative stability of resonance structures using a set of rules. use the concept of resonance to explain structural features of molecules and ions.

Resonance is a mental exercise and method within the Valence Bond Theory of bonding that describes the delocalization of electrons within molecules. It compares and contrasts two or more possible Lewis structures that can represent a particular molecule.

Resonance structures are used when one Lewis structure for a single molecule cannot fully describe the bonding that takes place between neighboring atoms relative to the empirical data for the actual bond lengths between those atoms.

In chemistry, pyran, or oxine, is a six-membered heterocyclic, non- aromatic ring, consisting of five carbon atoms and one oxygen atom and containing two double bonds. The molecular formula is C 5 H 6 O. There are two isomers of pyran that differ by the location of the double bonds.

The 3D chemical structure image of 3-Cyclopenten-1-one is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them.