75249-87-5Relevant academic research and scientific papers
REACTIONS DU TRICHLOROMETHYL-TRIMETHYL-SILANE AVEC DES FERROTETRA-ARYL-PORPHYRINES
Battoni, Jean-Paul,Dupre, Daniel,Mansuy, Daniel
, p. 303 - 309 (1981)
Reduction of trichloromethyltrimethylsilane by ferrotetraarylporphyrins, FeII(P), in the presence of an excess of a reducing agent, leads to the formation, of 2C complexes when iron powder is used as a reducing agent or of Fe(P)(CS) complexes when sodium dithionite is used as a reducing agent.These results can be explained by the involvement of unstable α-silylcarbeneferroporphyrin complexes.
Coordination properties of μ-carbidodimeric iron(IV) 2,3,7,8,12,13,17,18-octapropyltetraazaporphyrinate and 5,10,15,20-tetraphenylporphyrinate in reactions with nitrogen-containing bases
Zaitseva,Zdanovich,Kudrik,Koifman
, p. 1257 - 1266 (2017/09/29)
The equilibria of μ-carbidodimeric iron(IV) 2,3,7,8,12,13,17,18-octapropyltetraazaporphyrinate and 5,10,15,20-tetraphenylporphyrinate in reactions with nitrogen-containing bases in an inert solvent were studied spectrophotometrically. The equilibrium constants of the studied processes and the compositions of molecular complexes were determined. The effect of the electronic and conformation factors of a macrocycle and the nature of the base on the equilibrium constant was pointed out. A comparative analysis of the substrate specificity of the studied compounds was performed.
Syntheses, Spectroscopical Properties, and Crystal Structures of Binuclear Homo- and Heteroleptic μ-Carbido Complexes of Iron(IV) with Phthalocyaninate and Tetraphenylporphyrinate ligands
Galich, Lutz,Kienast, Arne,Hückst?dt, Heiner,Homborg, Heiner
, p. 1235 - 1242 (2008/10/09)
μ-Carbidophthalocyaninato(2-)iron(IV)tetraphenylporphyrinato(2-)iron(IV) (2) and μ-carbido-bis(tetraphenylporphyrinato(2-)iron(IV)) (1) are synthesized by the reaction of phthalocyaninato(2-)ferrate(I) with dichlorcarbenetetraphenylporphyrinato(2-)iron(II). 1 and 2 as well as μ-carbido-bis(phthalocyaninato(2-)iron(IV)) (3) are soluble in tetrahydrofuran, but only 2 and 3 form solvent adducts 2a and 3a by coordination of thf to each of the iron atoms in trans position to the bridging C atom. The crystal structures of the solvates 1 · thf, 2a · thf and 3a · thf, crystallizing from the thf solutions, are determined: 1 · thf, orthorhombic, Fddd, a = 21.966(3) A?, b = 22.300(1) A, c = 31.220(3) A?, Z = 8; 2a · thf, orthorhombic, P22121, a = 14.487(3) A?, b = 20.753(5) A?, c = 25.803(7) A?, Z = 4; 3a · thf, orthorhombic, P212121, a = 12.642(1) A?, b = 22.361(7) A?, c = 23.629(3) A?, Z = 4. In all three double-decker complexes both "tetrapyrrol" ligands are held together by a linear Fe-C-Fe bridge in a staggered (1 · thf, 3a · thf) or ecliptic conformation (2a · thf). The Fe-C distances vary between 1.71 and 1.64 A?, (average: 1.68 A?,). In 2a · thf and 3a · thf the iron atoms are nearly in the centre (Ct) of the (Np)4 planes (d(Fe-Ct) ~ 0.1 A?,), but in 1 · thf these atoms are directed by 0.27 A? towards the bridging C atom. The macrocyclic ligands of 1 · thf are severely concavely, those of 2a · thf and 3a · thf slightly distorted. The electronic absorption spectra and vibrational spectra are discussed.
Electrochemistry of the μ-carbido iron tetraphenylporphyrin dimer, ((TPP)Fe)2C, in nonaqueous media. Evidence for axial ligation by pyridine
Lan?on,Kadish
, p. 3942 - 3947 (2008/10/08)
The electron-transfer reactions of the μ-carbido iron tetraphenylporphyrin dimer, ((TPP)Fe)2C, were investigated by electrochemical and spectroscopic techniques. In CH2Cl2 two reductions and four oxidations were observed between -1.90 and +1.60 V vs. SCE. All reactions involved single-electron-transfer steps and were reversible on the cyclic voltammetry time scale. Addition of pyridine to oxidized and reduced solutions of ((TPP)Fe)2C indicated the formation of both mono and bis adducts. Values of log β2, ranged between 7.7 ± 0.4 for [((TPP)Fe)2C(py)2]2+ formation and 2.6 ± 0.4 for formation of ((TPP)Fe)2C(py)2. A weak interaction of pyridine was also observed with [((TPP)Fe)2C]-. An overall oxidation-reduction mechanism is given in CH2Cl2/pyridine mixtures, and comparisons are made with ligand-binding properties of neutral and oxidized ((TPP)Fe)2N and ((TPP)Fe)2O.
