Dianions

{
  "id": "MLC-T-CHM-003130",
  "term": "Dianions",
  "field": "Chemistry",
  "definition": "Molecular entities that carry two negative elementary charges. These species result from the gain of two electrons by a neutral molecule or the loss of two protons from a neutral molecule. For example, the sulfate ion (SO4)2− is a common inorganic dianion, while the dianion of fluorescein is responsible for its characteristic green fluorescence under basic conditions.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1331 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/dianions/"
}