Mean-square end-to-end distance of a freely rotating chain

{
  "id": "MLC-T-CHM-007085",
  "term": "Mean-square end-to-end distance of a freely rotating chain",
  "field": "Chemistry",
  "definition": "The average of the square of the distance between the ends of a polymer chain where bond angles are fixed, but rotation around each bond is completely free and independent. This model provides a more realistic representation of polymer chain dimensions than the freely jointed chain. It accounts for the geometric constraints imposed by bond angles.",
  "subject": "Polymer",
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 77 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mean-square-end-to-end-distance-of-a-freely-rotating-chain/"
}