Iron

Shaping and Enforcing Coordination Spheres: The Implications of C3 and C1 Chirality in the Coordination Chemistry of 1,1,1‐Tris(oxazolinyl)ethane (“Trisox”)

“…As for the other mononuclear complexes, the coordination geometry around the metal is distorted octahedral with the trisox ligand binding facially and the three remaining positions being occupied by coordinating acetonitrile. From the FeÀN oxaz bond lengths, it can be deduced that compound 5 has a high-spin iron(II) center (bond lengths averaging 2.2 ), [18] which is consistent with the observed paramagnetism of the complex. The average Fe À N acetonitrile distance is 2.1 .…”

Comparative Study on the Corrosion Inhibitive Effect of 2-Mecraptobenzothiazole and Na2HPO4 on Industrial Conveying API 5L X42 Pipeline Steel

“…In ambient conditions, they coordinate in hypercrystallic structures and minerals through tetrahedra or octahedra (or connected trioctahedra by others [111], linking by corners or edge sharing that form chains, clusters, and sheets [112][113][114]. In the aquatic system of our study, equally to the increase in local electronegativity and valence of the cations, phosphates tend to form the most thermodynamically stable hypercrystallic structures, with an ascending affinity to cyclic or/and branched complexes, with the latter to be achieved either through electrostatic attraction to small cations, as Cl − , SO ], which were formed through the hydration, olation, or oxolation of ferrous and ferric species [109,113,115,116]. It is established that transition metals can exchange a mere electron, whereas non-metal reactive species, as dioxygen and radical species, are restricted by Pauli's principle, reacting in a slower way [109].…”

Catalytic behaviour of a novel Fe(iii) Schiff base complex in the mild oxidation of cyclohexane

“…Iron complexes attract special attention due to their diverse coordination geometries, 1 pronounced magnetic effects, such as single-molecule magnetism [2][3][4] and spin crossover behaviour, [5][6][7] and catalytic properties. [8][9][10][11][12][13][14][15] The last feature is of particular interest taking into account the role of iron coordination compounds in biological [16][17][18][19][20] processes: a number of natural enzymes with various functions contain iron in their active centres.…”

“…The role of bulky ligands is to build an unsaturated coordination environment around the iron cation, promoting formation of Fe-O-OH species with the subsequent formation of an Fe V iron oxidation state species. Inspired by these results and in pursuit of our interest in the development of novel iron catalytic systems for the oxidation of alkanes under mild conditions, [42][43][44][50][51][52][53][54][55] we have tested the catalytic activity in this field of the newly synthesized complex ijFe III IJHL)Cl 2 IJDMF)]ClĴDMF (1), where HL = N,N,O-donor Schiff base ligand (HL = 2-ij(E)-{[2-IJpiperazin-1-yl)ethyl]imino}methyl]phenol).…”