Lewis acid

{
  "id": "MLC-T-CHM-006545",
  "term": "Lewis acid",
  "field": "Chemistry",
  "definition": "A molecular entity, or a corresponding chemical species, that possesses an accessible, empty atomic or molecular orbital capable of accommodating an electron pair. This species interacts with a Lewis base, which donates the electron pair, to form a coordinate covalent bond in a product called a Lewis adduct. Common examples include metal cations like Mg²⁺ and Al³⁺, as well as molecules with an incomplete octet such as boron trifluoride (BF₃), which contrasts with Brønsted-Lowry acids that are defined as proton donors.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Lewis adduct",
    "Lewis base",
    "chemical species",
    "coordination",
    "dipolar bond",
    "electron-pair acceptor",
    "molecular entity"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1135 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/lewis-acid/"
}