Out-of-plane bending coordinate

{
  "id": "MLC-T-CHM-008374",
  "term": "Out-of-plane bending coordinate",
  "field": "Chemistry",
  "definition": "A vibrational coordinate describing the displacement of an atom or group of atoms perpendicular to a defined molecular plane. This motion involves a change in the angle between a bond and a plane. Such coordinates are used in molecular mechanics and vibrational spectroscopy to characterize molecular flexibility.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "angle"
  ],
  "references": [
    "PAC, 1978, 50, 1707. 'Definition and Symbolism of Molecular Force Constants' on page 1710 (https://doi.org/10.1351/pac197850111707)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/out-of-plane-bending-coordinate/"
}