Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Alan L. Balch"'
Publikováno v:
Crystal Growth & Design. 16:447-455
Two related nickel(II) porphyrins, etioporphyrin-I (Etio-I) and octaethylporphyrin (OEP), were cocrystallized with C70 to produce the new cocrystal structures C70·Ni(Etio-I)·2C6H6 and C70·Ni(OEP)·2C6H6. Etio-I is a variant of OEP, where four alte
Publikováno v:
Journal of the American Chemical Society. 126:6379-6386
The results presented here show that the nature of the axial ligand can alter the distribution of electrons between the metal and the porphyrin in complexes where there is an oxygen atom replacing one of the meso protons. The complexes (1-MeIm)(2)Fe(
Autor:
Alan L. Balch, Lechosław Latos-Grażyński, Jacek Wojaczyński, and Pamela M. Van Calcar, Piotr J. Chmielewski
Publikováno v:
Inorganic Chemistry. 38:3040-3050
The 1H NMR spectra of iron(III) complexes of dimeric 5,5‘-bis(10,15,20-triphenylporphyrin) [(TrPPH2)2], 5,5‘-bis(10,15,20-tris(p-methoxyphenyl)porphyrin) [(Tr(p-MeOP)PH2)2], and hybrid (TrPPH2)(Tr(...
Publikováno v:
Chemistry - A European Journal. 3:268-278
The nickel(I) and nickel(II) complexes of 5,20-bis(p-tolyl)-10, 15-diphenyl-21-oxaporphyrin (ODTDPPH) and 5,10,15,20-tetraphenyl-21, 23-dioxaporphyrin (O2 TPP) have been investigated. These oxa analogues of 5,10,15,20-tetraarylporphyrin, where one or
Autor:
Piotr J. Chmielewski, E. Pacholska, Alan L. Balch, Lechosław Latos-Grażyński, Marilyn M. Olmstead
Publikováno v:
Inorganic Chemistry. 35:566-573
The synthesis of a new monoheteroporphyrin, 5,20-diphenyl-10,15-bis(p-tolyl)-21-selenaporphyrin (SeDPDTPH), is reported. The 21-selenaporphyrin has been characterized by 1H NMR, 13C NMR, mass spectrometry, and UV−visible spectra and an X-ray struct
Publikováno v:
Inorganic Chemistry. 33:2815-2822
reflections and 258 parameters yielded R = 0.060, R, = 0.050. The iron ion is again five-coordinate with the average Fe-N distance of 1.974 A and the Fe-C distance of 1.965( 12) A. The iron ion is 0.19 A out of the N4 plane. The porphyrin core is ruf
Autor:
Marilyn M. Olmstead, Nasser Safari, Lechosław Latos-Grażyński, Bruce C. Noll, Alan L. Balch, Ludmiła Szterenberg
Publikováno v:
Journal of the American Chemical Society. 115:1422-1429
The verdohemes are shown to contain the planar, tetradentate oxoporphyrin structure. Structural studies of paramagnetic {(OEOP)Fe"'CI,), where OEOP is the monoanion of octaethyloxoporphyrin, by IH NMR spectroscopy and X-ray crystallography reveal tha
Autor:
Alan L. Balch
Publikováno v:
Inorganica Chimica Acta. :297-307
The coordination of alkyl peroxides by heme proteins is an important step in the functioning of several enzymes, (for example, peroxidases, cytochrome P 450 , estrogen synthase). Generally the reaction of peroxides with iron porphyrins in the absence
Publikováno v:
Inorganic Chemistry. 29:3253-3256
In order to facilitate the detection of the diiron complexes and to better understand their behavior in solution, we undertook an analysis of their NMR spectra
Autor:
Jeffrey S. De Ropp, Gerd N. La Mar, Alan L. Balch, Ramesh D. Arasasingham, Ken Eguchi, Charles R. Cornman
Publikováno v:
Inorganic Chemistry. 29:1847-1850
The proton NMR spectra of five-coordinate, high-spin iron(III) complexes of protoporphyrin IX dimethyl ester and tetraphenylporphyrin with axial p-nitrophenoxy and p-nitrothiophenoxy ligands have been obtained and analyzed. Differences between S and