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Chemical compound From Wikipedia, the free encyclopedia
Iron tris(dimethyldithiocarbamate) is the coordination complex of iron with dimethyldithiocarbamate with the formula Fe(S2CNMe2)3 (Me = methyl). It is marketed as a fungicide.[3]
Names | |
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IUPAC name
Tris(dimethyldithiocarbamato)iron | |
Other names
Ferric dimethyl dithiocarbamate, Ferbam | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.034.970 |
EC Number |
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KEGG | |
PubChem CID |
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RTECS number |
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UNII | |
UN number | 3077, 2771 |
CompTox Dashboard (EPA) |
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Properties | |
[(CH3)2NCS2]3Fe | |
Molar mass | 416.5 g/mol |
Appearance | Dark brown to black, odorless solid[1] |
Density | 1.52 g/cm3 |
Melting point | Decomposes above 180 °C (356 °F)[1] |
Boiling point | Decomposes[1] |
0.01% (20 °C)[1] | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Reacts with strong oxidizers, moisture[1] |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
3000 mg/kg (rabbit, oral) 2000 mg/kg (guinea pig, oral) 1130 mg/kg (rat, oral) 3400 mg/kg (mouse, oral)[2] |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 15 mg/m3[1] |
REL (Recommended) |
TWA 10 mg/m3[1] |
IDLH (Immediate danger) |
800 mg/m3[1] |
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 tris(dithiocarbamate)s are typically are prepared by salt metathesis reactions.[3]
Iron tris(dimethyldithiocarbamate) is an octahedral coordination complex of iron(III) with D3 symmetry.[4]
Spin crossover (SCO) was first observed in 1931 by Cambi et al. who discovered anomalous magnetic behavior for the tris(N,N-dialkyldithiocarbamatoiron(III) complexes.[5] The spin states of these complexes are sensitive to the nature of the amine substituents.[6]
Iron tris(dithiocarbamate)s react with nitric oxide to give a nitrosyl complex:
This efficient chemical trapping reaction provides a means to detect NO.[7]
Reflecting the strongly donating properties of dithiocarbamate ligands, iron tris(dithiocarbamate)s oxidize at relatively mild potentials to give isolable iron(IV) derivatives [Fe(S2CNR2)3]+.[8]
Iron tris(dithiocarbamate)s react with hydrochloric acid to give the pentacoordinate chloride:[9]
The U.S. Occupational Safety and Health Administration (OSHA) has set the legal (permissible exposure limit) for ferbam exposure in the workplace as 15 mg/m3 over an 8-hour workday. The U.S. National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 1 mg/m3 over an 8-hour workday. At levels of 800 mg/m3, ferbam is immediately dangerous to life and health.[1]
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