Spiro macromolecule

{
  "id": "MLC-T-CHM-011231",
  "term": "Spiro macromolecule",
  "field": "Chemistry",
  "definition": "A double-strand macromolecule made of a continuous series of rings in which each pair of adjacent rings has just one atom in common, the spiro atom. A macromolecule that merely contains an isolated spiro atom does not qualify. Because the spiro atom is tetrahedral, successive rings lie in roughly perpendicular planes, which gives a rigid, twisted backbone.",
  "subject": "Polymer",
  "see_also": [
    "constitutional unit",
    "double-strand macromolecule",
    "sequence"
  ],
  "references": [
    "PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2295 (https://doi.org/10.1351/pac199668122287)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spiro-macromolecule/"
}