iron(II)

dication of iron
ChemicalSubstance type_of_chemical_entity Q428946
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iron(II)

Summary

iron(II) is a type of chemical entity[1]. iron(II) ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (182 views/month).[2]

Key Facts

  • iron(II)'s instance of is recorded as type of chemical entity[3].
  • iron(II)'s followed by is recorded as iron(III)[4].
  • iron(II)'s CAS Registry Number is recorded as 15438-31-0[5].
  • iron(II)'s canonical SMILES is recorded as [Fe+2][6].
  • iron(II)'s InChI is recorded as InChI=1S/Fe/q+2[7].
  • iron(II)'s InChIKey is recorded as CWYNVVGOOAEACU-UHFFFAOYSA-N[8].
  • iron(II)'s chemical formula is recorded as Fe²⁺[9].
  • iron(II)'s subclass of is recorded as monoatomic dication[10].
  • iron(II)'s part of is recorded as ferrous iron binding[11].
  • iron(II)'s part of is recorded as response to iron(II) ion[12].
  • iron(II)'s part of is recorded as ferrous iron transmembrane transporter activity[13].
  • iron(II)'s part of is recorded as ferrochelatase activity[14].
  • iron(II)'s part of is recorded as heme oxygenase (decyclizing) activity[15].
  • iron(II)'s part of is recorded as iron-cytochrome-c reductase activity[16].
  • iron(II)'s part of is recorded as sirohydrochlorin ferrochelatase activity[17].
  • iron(II)'s part of is recorded as iron ion transmembrane transporter activity[18].
  • iron(II)'s part of is recorded as 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase activity from histidine and PLP[19].
  • iron(II)'s part of is recorded as ferroxidase activity[20].
  • iron(II)'s has part is recorded as iron[21].
  • iron(II)'s UNII is recorded as GW89581OWR[22].
  • iron(II)'s ChemSpider ID is recorded as 25394[23].
  • iron(II)'s PubChem CID is recorded as 27284[24].
  • iron(II)'s ChEBI ID is recorded as 29033[25].
  • iron(II)'s found in taxon is recorded as Homo sapiens[26].
  • iron(II)'s DrugBank ID is recorded as DB14510[27].

Body

Works and Contributions

Things named for iron(II) include ferro-actinolite[28], a mineral species[29]; ferrokentbrooksite[30], a mineral species[31]; ferro-ferri-hornblende[32], a mineral species[33]; ferro-gedrite[34], a mineral species[35]; ferro-glaucophane[36], a mineral species[37]; ferroceladonite[38], a mineral species[39]; and ferrohexahydrite[40], a mineral species[41].

Why It Matters

iron(II) ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (182 views/month).[2] iron(II) has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.[42] iron(II) is known by 44 alternative names across languages and contexts.[43]

Entities named for iron(II) include ferro-actinolite[28], a mineral species[29]; ferrokentbrooksite[30], a mineral species[31]; ferro-ferri-hornblende[32], a mineral species[33]; ferro-gedrite[34], a mineral species[35]; ferro-glaucophane[36], a mineral species[37]; and ferroceladonite[38], a mineral species[39].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . Global Substance Registration System. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  4. [6] . PubChem. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . Gene Ontology release 2019-11-16. wikidata.org.
  10. [12] . Gene Ontology release 2019-11-16. wikidata.org.
  11. [13] . Gene Ontology release 2019-11-16. wikidata.org.
  12. [14] . Gene Ontology release 2020-05-02. wikidata.org.
  13. [15] . Gene Ontology release 2020-05-02. wikidata.org.
  14. [16] . Gene Ontology release 2020-05-02. wikidata.org.
  15. [17] . Gene Ontology release 2020-05-02. wikidata.org.
  16. [18] . geneontology.org. Retrieved . geneontology.org. Provenance: wikidata.org.
  17. [19] . geneontology.org. Retrieved . geneontology.org. Provenance: wikidata.org.
  18. [20] . geneontology.org. Retrieved . geneontology.org. Provenance: wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . Global Substance Registration System. Retrieved . wikidata.org.
  21. [23] . Q2311683. Retrieved . wikidata.org.
  22. [24] . PubChem. Retrieved . wikidata.org.
  23. [25] . ChEBI. Retrieved . wikidata.org.
  24. [26] . Recon 2.2: from reconstruction to model of human metabolism. wikidata.org.
  25. [27] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [28] . wikidata.org. → on this site
  2. [30] . wikidata.org. → on this site
  3. [32] . wikidata.org. → on this site
  4. [34] . wikidata.org. → on this site
  5. [36] . wikidata.org. → on this site
  6. [38] . wikidata.org. → on this site
  7. [40] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] . Wikidata. wikidata.org. → on this site
  2. [31] . Wikidata. wikidata.org. → on this site
  3. [33] . Wikidata. wikidata.org. → on this site
  4. [35] . Wikidata. wikidata.org. → on this site
  5. [37] . Wikidata. wikidata.org. → on this site
  6. [39] . Wikidata. wikidata.org. → on this site
  7. [41] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [42] . Wikidata sitelinks. wikidata.org.
  3. [43] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). iron(II). Retrieved May 3, 2026, from https://4ort.xyz/entity/iron-ii
MLA “iron(II).” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/iron-ii.
BibTeX @misc{4ortxyz_iron-ii_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron(II)}}, year = {2026}, url = {https://4ort.xyz/entity/iron-ii}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron(II) — https://4ort.xyz/entity/iron-ii (retrieved 2026-05-03)

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