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Arachno-

Term · Chemistry · MLC-T-CHM-000758

A structural prefix used to describe a polyhedral cluster of atoms, particularly in boranes and their derivatives, that is missing two vertices from the corresponding closed, or closo-, polyhedron. The resulting structure is more open and resembles a web, hence the name derived from the Greek word for spider. An arachno-borane with n boron atoms has a chemical formula of the type BnHn+6.

Table 1. Record
IdentifierMLC-T-CHM-000758
FieldChemistry
ReferencesRed Book, 3rd ed., p. 245
See alsoHypho-; Nido-
Record as JSON 
{
  "id": "MLC-T-CHM-000758",
  "term": "Arachno-",
  "field": "Chemistry",
  "definition": "A structural prefix used to describe a polyhedral cluster of atoms, particularly in boranes and their derivatives, that is missing two vertices from the corresponding closed, or closo-, polyhedron. The resulting structure is more open and resembles a web, hence the name derived from the Greek word for spider. An arachno-borane with n boron atoms has a chemical formula of the type BnHn+6.",
  "see_also": [
    "hypho-",
    "nido-"
  ],
  "references": [
    "Red Book, 3rd ed., p. 245"
  ],
  "url": "https://mlchart.com/terminology/chemistry/arachno/"
}

Record 809 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.