Racemic packing

{
  "id": "MLC-T-CHM-009797",
  "term": "Racemic packing",
  "field": "Chemistry",
  "definition": "A crystal packing of a chiral polymer in which chain stems of opposite helical sense, left-handed and right-handed, occur side by side in equal numbers within the same lattice. It covers chains that are chiral themselves or that take on a helical conformation in the crystal. The polylactide stereocomplex, where poly(L-lactide) and poly(D-lactide) chains pack together, is a standard example.",
  "subject": "Polymer",
  "see_also": [
    "left-handed helix",
    "crystal polymorph",
    "right-handed helix"
  ],
  "references": [
    "PAC, 2011, 83, 1831. 'Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)' on page 1847 (https://doi.org/10.1351/PAC-REC-10-11-13)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/racemic-packing/"
}