User:Handedplanes/Iron(II) thiocyanate
File:MnNCS2 powder.png Sample of iron(II) thiocyanate
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File:MnSCN2 crystal structure.png Crystal structure of iron(II) thiocyanate
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
EC Number |
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PubChem CID
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Properties | |
Fe(SCN)2 | |
Molar mass | 171.10 g/mol[1] |
Appearance | red brown powder |
Density | 2.41 g/cm3[1] |
Melting point | decomposes[1] |
0.013 cm3/mol [2] | |
Structure | |
Hg(SCN)2 structure | |
Octahedral | |
Hazards | |
GHS labelling: | |
Danger | |
H317, H334, H341, H350i, H360D, H372, H410 | |
P201, P202, P260, P261, P264, P270, P272, P273, P280, P281, P285, P302+P352, P304+P341, P308+P313, P314, P321, P333+P313, P342+P311, P363, P391, P405, P501 | |
Related compounds | |
Other anions
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Iron(II)_fluoride,Iron(II)_chloride,Iron(II)_bromide,Iron(II)_iodide |
Other cations
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Copper(I) thiocyanate, Cobalt(II) thiocyanate, Mercury(II) thiocyanate,Nickel(II) thiocyanate, Ammonium thiocyanate Potassium thiocyanate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iron(II) thiocyanate is a coordination polymer with formula Fe(SCN)2.[1] It is a red brown air sensitive solid and its crystal structure first reported in 2020.[1]
Structure
[edit]The structure of Fe(SCN)2 was determined via powder diffraction and consists of two-dimensional sheets held together through Van der Waals forces. It belongs to mercury thiocyanate structure-type and can be considered a distorted form of the MnBr2 (CdI2) structure. Each iron is octahedrally coordinated by four sulfurs and two nitrogens. The sulfur end of the SCN- ligand is doubly bridging.[1]
Synthesis
[edit]Iron(II) thiocyanate can be prepared using salt metathesis using the reaction of potassium thiocyanate K(SCN) and iron(II) tetrafluoroborate in acetonitrile, filtering off the precipitated KBF4 to yield a solution of Fe(SCN)2. On removal of acetonitrile a pure microcrystalline powder of Fe(SCN)2 can be obtained.
Magnetism
[edit]Iron(II) thiocyanate, like iron(II) iodide, iron(II) bromide and iron(II) chloride, is an antiferromagnet at low temperatures.[2]
References
[edit]- ^ a b c d e f Dubler, Erich; Relier, Armin; Oswald, H. R. (1982-01-01). "Intermediates in thermal decomposition of nickel(II) complexes: The crystal structures of Ni(SCN)2(NH3)2 and Ni(SCN)2". Zeitschrift für Kristallographie - Crystalline Materials. 161 (1–4). doi:10.1524/zkri.1982.161.14.265. ISSN 2196-7105.
- ^ a b DeFotis, G. C.; Dell, K. D.; Krovich, D. J.; Brubaker, W. W. (1993-05-15). "Antiferromagnetism of Ni(SCN)2". Journal of Applied Physics. 73 (10): 5386–5388. doi:10.1063/1.353740. ISSN 0021-8979.