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Iron(II) perchlorate
Names
IUPAC name
Iron(II) diperchlorate
Other names
  • Iron diperchlorate
  • Ferrous perchlorate
Identifiers
3D model ( JSmol)
ChemSpider
EC Number
  • 237-704-4
PubChem CID
  • InChI=1S/2ClHO4.Fe.H2O/c2*2-1(3,4)5;;/h2*(H,2,3,4,5);;1H2/q;;+2;/p-2
    Key: BJDJGQJHHCBZJZ-UHFFFAOYSA-L
  • O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Fe+2]
Properties
Fe(ClO4)2
Molar mass 254.75 g/mol
Appearance Green crystals
Density 2.15 g/cm3
Melting point 100 °C (212 °F; 373 K)
98 g/100 mL (25 °C) [1]
Structure [2]
Orthorhombic
Pmn21
a = 7.79 Å, b = 13.48 Å, c = 5.24 Å
Hazards
GHS labelling:
GHS03: Oxidizing GHS07: Exclamation mark
Danger
H272, H315, H319, H335
P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamond Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform Flammability 0: Will not burn. E.g. water Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazard OX: Oxidizer. E.g. potassium perchlorate
2
0
1
OX
Related compounds
Other cations
 Manganese(II) perchlorate
Cobalt(II) perchlorate
Nickel(II) perchlorate
Related compounds
 Iron(III) perchlorate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iron(II) perchlorate is the inorganic compound with the formula Fe(ClO4)2·6H2O. A green, water-soluble solid, it is produced by the reaction of iron metal with dilute perchloric acid followed by evaporation of the solution: [3]

Fe + 2 HClO4 + 6 H2O → Fe(ClO4)2·6H2O + H2

In solution, iron(II) perchlorate slowly oxidizes in air to iron(III) oxyhydroxide. [4]

The hexahydrate consists of discreet hexaaquoiron(II) dications and perchlorate anions. It crystallizes with an orthorhombic structure. [2] It has minor phase transitions at 245 and 336 K. [5]

Uses

In organic chemistry, iron(II) perchlorate can be used as a source of ferrous ions for the Fenton oxidation. [1]

References

  1. ^ a b Mark W. Zettler; Daniela Sustac Roman (2014). "Iron(II) Perchlorate". Encyclopedia of Reagents for Organic Synthesis (EROS). doi: 10.1002/047084289X.ri064.pub2.
  2. ^ a b Ghosh, Minakshi; Ray, Siddhartha (1981). "Twinning, disorder and phase transition in ferrous Perchlorate hexahydrate crystals". Zeitschrift für Kristallographie - Crystalline Materials. 155 (1–2): 129–137. Bibcode: 1981ZK....155..129G. doi: 10.1524/zkri.1981.155.1-2.129.
  3. ^ B.K. Chaudhuri (1975). "A new type of phase transition in M(ClO4)2(H2O)6 M = Fe, Co, Ni and Mn". Solid State Communications. 16 (6): 767–772. doi: 10.1016/0038-1098(75)90071-X.
  4. ^ Philip George (1954). "The oxidation of ferrous perchlorate by molecular oxygen". Journal of the Chemical Society (Resumed): 4349–4359. doi: 10.1039/JR9540004349.
  5. ^ D. P. Chiang; C. H. Peng; J. K. Mei; I. M. Jiang; S. C. Lin; Y. C. Chen; H. T. Liu; Y. F. Chen; W. S. Tse (2008). "Raman spectra of crystalline iron perchlorate hexahydrate". Journal of Raman Spectroscopy. 39 (3): 344–348. doi: 10.1002/jrs.1801.
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