σ, π

{
  "id": "MLC-T-CHM-010466",
  "term": "σ, π",
  "field": "Chemistry",
  "definition": "Symbols representing types of covalent bonds formed by the overlap of atomic orbitals. A sigma (σ) bond results from the direct, head-on overlap of atomic orbitals, forming a single bond with electron density concentrated along the internuclear axis. A pi (π) bond results from the sideways overlap of p orbitals, forming a bond with electron density above and below the internuclear axis, and is always found in conjunction with a sigma bond in double or triple bonds.",
  "synonyms": [
    "sigma, pi"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "radical",
    "conjugated system",
    "hyperconjugation",
    "molecular orbital",
    "nodal plane"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1163 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/s-p/"
}