Tris(bipyridine)iron(II) chloride

Tris(bipyridine)iron(II) chloride
Identifiers
CAS Number	14751-83-8;
3D model (JSmol)	Interactive image;
ChemSpider	176367;
PubChem CID	203609;
	InChI InChI=1S/3C10H8N2.2ClH.Fe/c31-3-7-11-9(5-1)10-6-2-4-8-12-10;;;/h31-8H;2*1H;/q;;;;;+2/p-2 Key: GBRPARYPGGYWHF-UHFFFAOYSA-L;
	SMILES C1=CC=NC(=C1)C2=CC=CC=N2.C1=CC=NC(=C1)C2=CC=CC=N2.C1=CC=NC(=C1)C2=CC=CC=N2.[Cl-].[Cl-].[Fe+2];
Properties
Chemical formula	C30H24Cl2FeN6
Molar mass	595.31 g·mol−1
Appearance	red solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tris(bipyridine)iron(II) chloride is the chloride salt of the coordination complex tris(bipyridine)iron(II), [Fe(C₁₀H₈N₂)₃]²⁺. It is a red solid. In contrast to tris(bipyridine)ruthenium(II), this iron complex is not a useful photosensitizer because its excited states relax too rapidly, a consequence of the primogenic effect.

Tris(bipyridine)iron(II) chloride features an octahedral Fe(II) center bound to three 2,2'-Bipyridine ligands. The complex has been isolated as salts with many anions. ^[1]

Synthesis and reactions

The sulfate salt [Fe(bipy)₃]SO₄ is produced by combining ferrous sulfate with excess bipy in aqueous solution. This result illustrates the preference of Fe(II) for bipyridine vs water. Addition of cyanide to this solution precipitates solid Fe(bipy)₂(CN)₂.^[2]

Related complexes

Tris(o-phenanthroline)iron(II)

Reference

^ Batten, Stuart R.; Murray, Keith S.; Sinclair, Nathan J. (2000). "Tris(2,2′-bipyridyl- N , N ′)iron(II) diperchlorate". Acta Crystallographica Section C Crystal Structure Communications. 56 (8): e320. Bibcode:2000AcCrC..56E.320B. doi:10.1107/S0108270100009185.
^ Schilt, Alfred A. (1970). Dicyanobis(1,10-phenanthroline)Iron(II) and Dicyanobis(2,2′-bipyridine)iron(II). Inorganic Syntheses. Vol. 12. pp. 247–251. doi:10.1002/9780470132432.ch43. ISBN 978-0-470-13171-8.

[1] Batten, Stuart R.; Murray, Keith S.; Sinclair, Nathan J. (2000). "Tris(2,2′-bipyridyl- N , N ′)iron(II) diperchlorate". Acta Crystallographica Section C Crystal Structure Communications. 56 (8): e320. Bibcode:2000AcCrC..56E.320B. doi:10.1107/S0108270100009185.

[2] Schilt, Alfred A. (1970). Dicyanobis(1,10-phenanthroline)Iron(II) and Dicyanobis(2,2′-bipyridine)iron(II). Inorganic Syntheses. Vol. 12. pp. 247–251. doi:10.1002/9780470132432.ch43. ISBN 978-0-470-13171-8.

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