"mesoionic compound" meaning in English

See mesoionic compound in All languages combined, or Wiktionary

Noun

Forms: mesoionic compounds [plural]
Head templates: {{en-noun}} mesoionic compound (plural mesoionic compounds)
  1. (chemistry) any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen). Categories (topical): Chemistry Related terms: aromatic compound
    Sense id: en-mesoionic_compound-en-noun-Kdd7Mp8L Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries Topics: chemistry, natural-sciences, physical-sciences

Inflected forms

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    {
      "form": "mesoionic compounds",
      "tags": [
        "plural"
      ]
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  "head_templates": [
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      "expansion": "mesoionic compound (plural mesoionic compounds)",
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  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen)."
      ],
      "id": "en-mesoionic_compound-en-noun-Kdd7Mp8L",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "ring",
          "ring"
        ],
        [
          "heterocycle",
          "heterocycle"
        ],
        [
          "benzo",
          "benzo"
        ],
        [
          "sextet",
          "sextet"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "atom",
          "atom"
        ],
        [
          "covalent",
          "covalent"
        ],
        [
          "polar",
          "polar"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "delocalised",
          "delocalised"
        ],
        [
          "charges",
          "charges"
        ],
        [
          "conjugated",
          "conjugated"
        ],
        [
          "exocyclic",
          "exocyclic"
        ]
      ],
      "raw_glosses": [
        "(chemistry) any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen)."
      ],
      "related": [
        {
          "word": "aromatic compound"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "mesoionic compound"
}
{
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    }
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      "glosses": [
        "any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen)."
      ],
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        [
          "benzo",
          "benzo"
        ],
        [
          "sextet",
          "sextet"
        ],
        [
          "electron",
          "electron"
        ],
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          "atom",
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        [
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          "covalent"
        ],
        [
          "polar",
          "polar"
        ],
        [
          "structure",
          "structure"
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        [
          "delocalised",
          "delocalised"
        ],
        [
          "charges",
          "charges"
        ],
        [
          "conjugated",
          "conjugated"
        ],
        [
          "exocyclic",
          "exocyclic"
        ]
      ],
      "raw_glosses": [
        "(chemistry) any of a class of compounds having five-membered ring heterocycles (or their benzo derivatives) which possess a sextet of π-electrons in association with the atoms comprising the ring, but which cannot be represented by any one covalent or polar structure; typically the ring structure contains both positive and negative delocalised charges which cannot be associated with any one ring atom, and the negative charge can also be associated with a conjugated exocyclic atom (typically oxygen, sulfur, or nitrogen)."
      ],
      "topics": [
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        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "mesoionic compound"
}

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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-12-08 from the enwiktionary dump dated 2024-12-04 using wiktextract (bb46d54 and 0c3c9f6). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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