62813-29-0Relevant academic research and scientific papers
Simple heme dimers with strongly cooperative ligand binding
Khvostichenko, Daria,Yang, Qing-Zheng,Boulatov, Roman
, p. 8368 - 8370 (2007)
(Graph Presented) Two is better than one: FeII complexes of new porphyrins exist as dinners that bind small ligands cooperatively, as illustrated by the sigmoidal binding curve (fractional occupancy of binding sites, a, versus free-ligand conce
Through-Space Electrostatic Interactions Surpass Classical Through-Bond Electronic Effects in Enhancing CO2 Reduction Performance of Iron Porphyrins
Khadhraoui, Asma,Gotico, Philipp,Leibl, Winfried,Halime, Zakaria,Aukauloo, Ally
, p. 1308 - 1315 (2021/02/05)
In his pioneering work to unravel the catalytic power of enzymes, Warshel has pertinently validated that electrostatic interactions play a major role in the activation of substrates. Implementing such chemical artifice in molecular catalysts may help impr
Positional effects of second-sphere amide pendants on electrochemical CO2 reduction catalyzed by iron porphyrins
Nichols, Eva M.,Derrick, Jeffrey S.,Nistanaki, Sepand K.,Smith, Peter T.,Chang, Christopher J.
, p. 2952 - 2960 (2018/03/23)
The development of catalysts for electrochemical reduction of carbon dioxide offers an attractive approach to transforming this greenhouse gas into value-added carbon products with sustainable energy input. Inspired by natural bioinorganic systems that fe
A mild, facile, one-pot synthesis of zinc azido porphyrins as substrates for use in click chemistry
Bryden, Francesca,Boyle, Ross W.
supporting information, p. 1978 - 1982 (2013/09/24)
The conversion of porphyrins bearing primary amines into zinc-protected azido porphyrins utilising a diazo-transfer reagent is reported. This method allows the mild, facile, and one-pot synthesis of zinc azido porphyrins bearing a range of meso functionalities, producing the required porphyrin in high yield. Reactivity of the azide functionality is demonstrated by subsequent model click reactions to produce triazole derivatives. Georg Thieme Verlag Stuttgart New York.
A glycyl-substituted porphyrin as a starting compound for the synthesis of a π-π-stacked porphyrin-fullerene dyad with a frozen geometry
Lembo, Angelo,Tagliatesta, Pietro,Cicero, Daniel,Leoni, Alessandro,Salvatori, Alisa
supporting information; experimental part, p. 1093 - 1096 (2009/05/30)
A synthetic route for obtaining a porphyrin-fullerene dyad with a constrained geometry forcing the [60]fullerene sphere to lie on the porphyrin plane is reported, revealing a strong interaction in the ground state between the two chromophores. The Royal S
Imidazolate- and Oxo-Bridged Metalloporphyrins
Landrum, John T.,Grimmett, David,Haller, Kenneth J.,Scheidt, W. Robert,Reed, Christopher A.
, p. 2640 - 2650 (2007/10/02)
Urea-linked tetraphenylporphyrin dimers have been synthesized with bridging imidazolate ligands between Fe(II)/Fe(II), Mn(II)/Mn(II), and Mn(II)/Co(II) centers.Magnetic susceptibility measurements down to 4 K show that imidazolate is a relatively weak mediator of antiferromagnetic coupling in these complexes (-J = 2-5 cm-1).The heteronuclear Mn(II)/Co(II) dimer, an S = 5/2/S = 1/2 spin model for the heme a3/CuB active site of cytochrome oxidase, has -J = 5 cm-1.Thus, there is little support for the role of histidyl imidazolate as a bridging ligand between Fe(III) and Cu(II) in cytochrome oxidase where -J>200 cm-1.The magnetic, chemical, and X-ray structural properties of the μ-oxo ferric dimer of the face-to-face porphyrin have been investigated.Crystal data for O*H2O*2toluene follow: triclinic, a = 14.004(6) Angstroem, b = 22.995(6) Angstroem, c = 13.192(4) Angstroem, α = 101.45(2) deg, β = 93.91(2) deg, γ = 80.40(2) deg; space group P1/; Z = 2.The average Fe-N distance in the biporphyrin is 2.075 Angstroem, and the average Fe-O distance is 1.787 Angstroem.The iron atoms are displaced 0.60 and 0.65 Angstroem from the mean porphinato planes.The Fe-O-Fe angles is distinctly nonlinear with a value of 161.4 deg; a water molecule forms a hydrogen-bonding network between the oxo ligand and the hydrogen atoms of the urea link which joins the two halves of the biporphyrin.The two porphinato planes are not coplanar, having a dihedral angle of 15.8 deg.
Synthesis and Charactarization of "Tailed Picket Fence" Porphyrins
Collman, James P.,Brauman, John I.,Doxsee, Kenneth M.,Halbert, Thomas R.,Bunnenberg, Edward,et al.
, p. 4182 - 4192 (2007/10/02)
The synthesis of "picket fence" porphyrin derivatives bearing covalently attached axial bases is described.The porphyrins have been well characterized, primarily as the iron(II) complexes, meso-tri(α,α,α-o-pivalamidophenyl)-β-o-5-(N-imidazolyl)valeramidophenylporphinatoiron(II) and meso-tri(α,α,α-o-pivalamidophenyl)-β-o-4-(N-imidazolyl)butyramidophenylporphyrinatoiron(II), by UV/visible, MCD, 1H NMR, and Moessbauer spectroscopy, magnetic susceptibility, and elemental analysis.Preliminary results of carbon monoxide binding studies are reported.
Entropy, Enthalpy, and Side Arm Porphyrins. 1. Thermodynamics of Axial Ligand Competition between 3-Picoline and a Series of 3-Pyridyl Ligands Covalently Attached to Zinc Tetraphenylporphyrin
Walker, F. Ann,Benson, Mabry
, p. 5530 - 5538 (2007/10/02)
A series of five-coordinate zinc tetraphenylporphyrins, each with a covalently attached 3-pyridyl side chain of different length, were synthesized.NMR spectroscopy was used to study the displacement of the 3-pyridyl ligand by free 3-picoline in toluene-d
