Iron hydrazine complex

Narang, K. K. et al., Synth. React, lnorg. Met.-Org. Chem., 1996, 26(4), 573 The explosive properties of a series of 5 amminecobalt(III) azides were examined in detail. Compounds were hexaamminecobalt triazide, pentaammineazidocobalt diazide, cis- and fram-tetraamminediazidocobalt azide, triamminecobalt triazide [1], A variety of hydrazine complexed azides and chloroazides of divalent metals have been prepared. Those of iron, manganese and copper could not be isolated cobalt, nickel, cadmium and zinc gave products stable at room temperature but more or less explosive on heating [2],... 

Iron cyclopentadienyl complexes of 3-(2-chlorophenyl)propanones are cyclized with hydrazine into 1,4-dihydrocinnoline complexes, demetalated with sodium amide to give 3- or 3,4-disubstituted cinnolines (70-80%) (Scheme 29) (88JHC1107). 

Ozoemena KI, Nyokong T (2005) Electrocatalytic oxidation and detection of hydrazine at gold electrode modified with iron phthalocyanine complex linked to mercaptopyridine self-assembled monolayer. Talanta 67(1) 162-168... 

An iron(II) complex of a completely conjugated fourteen-membered hexa-aza ligand has been prepared by the condensation of 2,6-diacetylpyridine with hydrazine in acetonitrile. TTiere are two possible isomers, 134 and 135. X-ray data show that the structure of this complex is best represented by 134 in which the macrocycle is completely planar and the coordination geometry is pentagonal bipyramidal. The iron(II) complex of 134 is extremely labile to nucleophiles 113). The cobalt(II) 113), magnesium(II)114), zinc(II)114), and scandium(III) U5> complexes of this hexa-aza quadradentate ligand have also been prepared. 

Five types of Fe porphyrin complexes have beenreported, all of which have spin state 5=1 (l)the deep red, five-coordinate ferryl, (Fe =0) +, complexes and the six-coordinate adducts of these ferryl complexes, the (B)(Fe = 0) + complexes (2) the Fe phenyl complex (3) iron(fV) carbene complexes (4) iron(fV) hydrazine complexes and (5) the six-coordinate d complex [TPPFe(OMe)2] mentioned briefly in Section 7 above. The ferryl and Fe - phenyl cases have direct appheation to active states of heme proteins, particularly the cytochromes P450, peroxidases, catalases, and related enzymes. 

Benzoylhydrazones of 2,2-dimethyl-4,4-diphenylbut-3-enal undergo a novel photochemical cycli-zation to afford A -pyrazolines (l-benzoyl-4,4-dimethyl-5-diphenylmethyl) <93CC72l>. Prinzbach has described an interesting series of reactions <93CB429> starting from the bicyclic dienedione (237), the addition of hydrazine yields the double-Michael adduct (238) (and not the bishydrazone). which is cyclized into the double-A -pyrazoline (239) for, finally, obtaining the desired double-A -pyrazoline (240) (to prepare iron-tricarbonyl complexes). 

Mansuy, D., P. Battioni, and J.P. Mahy (1982). Isolation of an iron-nitrene complex from the dioxygen and iron porphyrin dependent oxidation of a hydrazine. J. Am. Chem. Soc. 104,4487-4489. 

In contrast to their Fe(ii) congeners, Fe(i) or Fe(0) do activate N2 toward protonation. A first example was the so-called Leigh cycle, which involves the conversion of N2 to NH3 mediated by iron(O) phosphine complexes. In this context, Tyler and coworkers synthesized the complex [Fe(N2) (DMeO-PrPE)2] supported by the DMeOPrPE = l,2-bis[bis(methoxypropyl)phos-phinojethane ligand, which renders the iron-N2 complex water soluble. Based on this work, the reduction and protonation of N2 coordinated to the simpler Fe(dmpe)2 complex has been treated by DFT. In this work, three plausible mechanistic pathways were evaluated (1) symmetric protonation, where protons are added to each nitrogen in an alternating sequence proceeding through diazene and hydrazine intermediates (2) asymmetric... 

The iron(II) complex of L36 is synthesised directly by interaction of stoichiometric amounts of 2,3-butanedione, hydrazine and formaldehyde on the iron(II) matrix [2]. [Co(L36)(CH3CN)2](C104)3 is synthesised by oxidation of [Co(L36)](C104)2 with molecular oxygen in acetonitrile in the presence of perchloric acid [2]. 

The iron(III)-catalyzed oxidation of hydrazine with S20 involves formation of mixed hydrazine-peroxydisulfate iron(III) complexes [equations (21)-(23)], with values for the rate constants k and k2 of... 

Tricarbonyl(vinylketene)iron(0) complexes were shown to react with dimethyl maleate, dimethyl fumarate, ( )-methyl 4-oxopent-2-enoate and ( )-ethyl 4,4,4-trifluorobut-2-enoate to give decarbonylated adducts. " New (77 -azadiene)Fe(CO)3 complexes containing furan, thiophene or ferrocenyl moieties at the G terminus of the heterodiene complexes have been prepared.X-ray crystal structures and extended Hiickel calculations of the new materials have been reported. Gomplexation of Fe2(GO)9 with iV,iV -bis(3-phenylallylidene)hydrazine in refluxing THF affords new ( 7" -azadiene)Fe(GO)3 complexes.Molecular structures of the new complexes have been confirmed by X-ray diffraction studies. 

Fig. 5 Volcano plot for oxidation of hydrazine in 0.1 mol NaOH on graphite modified electrode with several iron macrocyclic complexes. Data taken from Ref. [56]...

Similar to iron hydrazine carboxylate hydrazine (Fe(N2H3COO)2-(N2H4)2), the iron hydrazinium complex (N2H5Fe(N2H3C00)3-H20)... 

The combustion of mixed metal iron complexes is similar to that observed for hydrazinium metal iron hydrazine carboxylates. The combustion is autocatalytic, once ignited, and leaves behind voluminous mixed ferrites. The particulate properties of these oxides such as cobal-tites, ferrites and mixed ferrites have been investigated [32]. 

In addition, several addition reactions have been reported for the iron complex [Fe(CNCH3)j] with hydrazine and with methylamine (99) the products (XVI) and (XVII), respectively, are described. A crystal structure study on the latter compound was carried out. 

Iron can be controlled with certain complexing agents, in particular glucono-5-lactone, citric acid, ethylenediaminetetraacetic acid, nitrilotriacetic acid, hydroxyethylethylene diaminetriacetic acid, hydroxyethyliminodiacetic acid, and the salts from the aforementioned compounds. These compounds must be added together with nitrogen-containing compounds such as hydroxylamine salts or hydrazine salts [486,643,1815]. 

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