Dichlorotetrakis(pyridine)iron(II)

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Dichlorotetrakis(pyridine)iron(II)
FeCl2py4.png
Names
Other names
Tetra(pyridine)iron dichloride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/4C5H5N.2ClH.Fe/c4*1-2-4-6-5-3-1;;;/h4*1-5H;2*1H;/q;;;;;;+2/p-2
    Key: KVQSAWIBLUAVAB-UHFFFAOYSA-L
  • C1=CC=NC=C1.C1=CC=NC=C1.C1=CC=NC=C1.C1=CC=NC=C1.Cl[Fe]Cl
Properties
C20H20Cl2FeN4
Molar mass 443.15 g·mol−1
Appearance yellow solid
Density 1.351 g/cm3
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Dichlorotetrakis(pyridine)iron(II) is the coordination complex with the formula FeCl2(pyridine)4. A yellow solid, it is a prominent example of a transition metal pyridine complex. It is used as an anhydrous precursor to other iron complexes and catalysts.[1] According to X-ray crystallography, the chloride ligands are mutually trans. The complex has a high spin configuration. A monohydrate as well as several related complexes are known, e.g. CoCl2(pyridine)4 and NiCl2(pyridine)4.[2] It is prepared by treating ferrous chloride with an excess of pyridine.[3]


References[edit]

  1. ^ Wu, Jessica Y.; Stanzl, Benjamin N.; Ritter, Tobias (2010). "A Strategy for the Synthesis of Well-Defined Iron Catalysts and Application to Regioselective Diene Hydrosilylation". Journal of the American Chemical Society. 132 (38): 13214–13216. doi:10.1021/ja106853y. PMID 20809631.
  2. ^ Long, Gary J.; Clarke, Peter J. (1978). "Crystal and molecular structures of trans-tetrakis(pyridine)dichloroiron(II), -nickel(II), and -cobalt(II) and trans-tetrakis(pyridine)dichloroiron(II) monohydrate". Inorganic Chemistry. 17 (6): 1394–1401. doi:10.1021/ic50184a002.
  3. ^ Baudisch, Oskar; Hartung, Walter H. (1939). "Tetrapyridino-Ferrous Chloride (Yellow Salt)". Inorganic Syntheses. 1: 184–185. doi:10.1002/9780470132326.ch64.