686274-71-5

Upstream product

• 7704-34-9 sulfur 
• 2404-55-9 trimethylphosphane sulfide 
• 506406-65-1 (2,4-bis(2,6-diisopropylphenylimino)pent-3-yl)Fe(isobutyl) 

Downstream Products

• 686274-72-6 ((HC(C(CH₃)NC₆H₃(CH(CH₃)2)2)2)Fe)2S(CH₃CN) 
• 686274-74-8 ((HC(C(CH₃)NC₆H₃(CH(CH₃)2)2)2)Fe)2S(CH₃NHNH₂)2 
• 686274-75-9 ((HC(C(CH₃)NC₆H₃(CH(CH₃)2)2)2)Fe)2S(NH₃)2 
• 686274-73-7 ((HC(C(CH₃)NC₆H₃(CH(CH₃)2)2)2)Fe)2S((CH₃)2NNH₂)2 

Relevant academic research and scientific papers

A sulfide-bridged diiron(II) complex with a N2H4 ligand

A sulfide-bridged diiron(II) complex bearing a cis-N2H 4 (hydrazine) ligand has been prepared by reaction of LFe II(μ-S)FeIIL (1; L = sterically encumbered β-diketiminate ligand) with 2 molar equivalents of N2H 4. The metastable diiron(II) hydrazine complex LFe II(μ-S)(μ-H2N-NH2)FeIIL (3) is formed, as shown by crystallography, NMR, vibrational, and electronic absorption spectroscopy. Compound 3 has been crystallographically characterized as its DBU (1, 8-diazabicyclo[5.4.0]undec-7-ene) adduct, which exhibits weak N-H···DBU hydrogen bonding. The synthetic process evolves roughly 2 equivalents of NH3. The cis-N2H4 bridge in 3 may be relevant to the structure and function of intermediates on the FeMoco of nitrogenase. Copyright

Isolation and characterization of stable iron(I) sulfide complexes

The first examples of iron(I) sulfide complexes are presented, in contrast with the +2 and +3 oxidation states that are well-known in synthetic and biological systems. Spectroscopic and computational studies show a high-spin d7 configuration at the metal. Alkali metal cations play a key role in supporting the unusually low oxidation state. Copyright

Synthesis and reactivity of low-coordinate iron(II) fluoride complexes and their use in the catalytic hydrodefluorination of fluorocarbons

Transition metal fluoride complexes are of interest because they are potentially useful in a multitude of catalytic applications, including C-F bond activation and fluorocarbon functionalization. We report the first crystallographically characterized examples of molecular iron(II) fluorides: [LMeFe(μ-F)]2 (12) and LtBuFeF (2) (L = bulky β-diketiminate). These complexes react with donor molecules (L'), yielding trigonal-pyramidal complexes LRFeF(L'). The fluoride ligand is activated by the Lewis acid Et2O·BF3, forming LtBuFe(OEt2)(η1-BF4) (3), and is also silaphilic, reacting with silyl compounds such as Me 3SiSSiMe3, Me3SiCCSiMe3, and Et 3SiH to give new thiolate LtBuFeSSiMe3 (4), acetylide LtBuFeCCSiMe3 (5), and hydride [L MeFe(μ-H)]2 (62) complexes. The hydrodefluorination (HDF) of perfluorinated aromatic compounds (hexafluorobenzene, pentafluoropyridine, and octafluorotoluene) with a silane R3SiH (R3 = (EtO)3, Et3, Ph 3, (3,5-(CF3)2C6H 3)Me2) is catalyzed by addition of an iron(II) fluoride complex, giving mainly the singly hydrodefluorinated products (pentafluorobenzene, 2,3,5,6-tetrafluoropyridine, and α,α,α,2, 3,5,6-heptafluorotoluene, respectively) in up to five turnovers. These catalytic perfluoroarene HDF reactions proceed with activation of the C-F bond para to the most electron-withdrawing group and are dependent on the degree of fluorination and solvent polarity. Kinetic studies suggest that hydride generation is the rate-limiting step in the HDF of octafluorotoluene, but the active intermediate is unknown. Mechanistic considerations argue against oxidative addition and outer-sphere electron transfer pathways for perfluoroarene HDF. Fluorinated olefins are also hydrodefluorinated (up to 10 turnovers for hexafluoropropene), most likely through a hydride insertion/β-fluoride elimination mechanism. Complexes 12 and 2 thus provide a rare example of a homogeneous system that activates C-F bonds without competitive C-H activation and use an inexpensive 3d transition metal.

A Sulfido-Bridged Diiron(II) Compound and Its Reactions with Nitrogenase-Relevant Substrates

The active site iron?molybdenum cofactor of nitrogenase has sulfide-bridged pairs of redox-active, trigonal pyramidal iron atoms that are postulated to be the site of N2 transformation. A synthetic compound is described in which two three-coordinate iron(II) ions are bridged similarly by sulfide. The compound binds nitrogen donors to become trigonal pyramidal and cleaves the N?N bond of phenylhydrazine with oxidation of iron(II) to iron(III). Copyright