Metalation of Water-Soluble Octabromoporphyrin with Lithium(I), Cadmium(II), and Mercury(II)

  title={Metalation of Water-Soluble Octabromoporphyrin with Lithium(I), Cadmium(II), and Mercury(II)},
  author={Masaaki Tabata and Jun Nishimoto and Akiko Ogata and Tohru Kusano and Nurun Nahar},
  journal={Bulletin of the Chemical Society of Japan},
A water-soluble porphyrin, 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (H2obtpps4−; H2P4−) was synthesized and the equilibrium constants have been determined for the reaction of H2obtpps4− with lithium(I), cadmium(II), and mercury(II) at 25 °C in I = 0.1 mol dm−3 (NaNO3). The protonation constants of H2obtpps4− were found to be 104.83 ± 0.04 mol−1 dm3, 101.96 ± 0.06 mol−1 dm3, and 10−10.02 ± 0.02 mol dm−3 for K1 = [H3P3−][H+]−1[H2P4−]−1, K2 = [H4P2−][H+]−1[H3P3… Expand
Kinetics and Mechanism of the Reaction of Mercury(II) with a Water-soluble Octabromoporphyrin
The reaction of mercury(II) hydroxide with 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin, (H2P4−), to form the mercury(II) porphyrin [(TPPSBr8)Hg]4−(HgP4−) wasExpand
Equilibrium studies on lithium(I) transfer into ionic liquid with a water-soluble octabromoporphyrin (H2(OBTMPyP)4+) from aqueous phase
A water-soluble octabromoporphyrin 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin (H2(OBTMPyP)4+), H2P4+) and its lithium complex, Li(OBTMPyP)3+, (LiP3+),Expand
Trace Analysis of Lithium with a Water-Soluble Porphyrin
A water-soluble porphyrin (2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin ; H2obtpps4-; H2P4-) was synthesized and developed for the determination and separation ofExpand
Kinetics of the reactions of divalent copper, zinc, cobalt, and nickel with a deformed water soluble centrally monoprotic porphyrin
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Cyclohexane hydroxylation by iodosylbenzene and iodobenzene diacetate catalyzed by a new β-octahalogenated Mn–porphyrin complex: The effect of meso-3-pyridyl substituents
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Formation, photophysics, and photochemistry of cadmium(II) complexes with 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin and its octabromo derivative: The effects of bromination and the axial hydroxo ligand
Abstract In slightly alkaline solution (pH 8) Cd(II) ion and 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (H2P4−) form a kinetically labile complex (HOCdP5−), in which the metal center is locatedExpand
Lithium complexes and the kinetics of interactions of zinc ions with tetra(N-methyl-4–pyridyl)porphyrins in basic solution
The acidity of the free base (H2–P(X)) forms of the tetra- (N-methyl-4–(3 or 2)pyridyl)porphyrins were studied in basic solutions at 25 C, I=0.50. Equilibrium constants for both the H2–Expand
Separation and transport of lithium of 10(-5) M in the presence of sodium chloride higher than 0.1 M by 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin.
The extraction and transport mechanism was discussed on the basis of extraction constants, chemical species and transportation rate and lithium in sea water or serum sample was separated and its concentration was determined spectrophotometrically by the present method without any interference from sodium chloride. Expand
Partially and fully beta-brominated Mn-porphyrins in P450 biomimetic systems: effects of the degree of bromination on electrochemical and catalytic properties.
Mn(III)(Br6TCMPP)Cl was more efficient as epoxidation or hydroxylation catalyst than both its fully and non-beta-brominated counterparts were, and an optimum redox potential effect is suggested as relevant in designing and understanding cytochrome P450 biomimetic catalysts. Expand
Perhalogenated 2-pyridylporphyrin complexes: synthesis, self-coordinating aggregation properties, and catalytic studies
The synthesis of 2, 3, 7, 8, 12, 13, 17, 18-octabromo-meso-tetrakis(2-pyridyl)porphyrin, H2Br8T2PyP, is described, including the comparison of four attempted methods for the demetallation ofExpand


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N-p-Nitrobenzyl-5,10,15,20-tetrakis(4-sulphonatophenyl)porphine[p-NO2Bz(Htpps)4–] was synthesized and used for the spectrophotometric determination of trace amounts of copper(II) based on theExpand
An EXAFS Study on Metal-Substitution Reaction of Homodinuclear Mercury(II) Porphyrin with Copper(II) in Aqueous Solution.
The metal-substitution reaction of the homodinuclear mercury(II) porphyrin complex, [Hg2(tpps)]2− (H2tpps4− = tetrakis(4-sulfonatophenyl)porphyrin), with copper(II) has been studied by the EXAFSExpand
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The X-ray structures of the β-substituted-pyrrole, its nickel(II) complex (NiTMOBP), and the nickel(II) derivative are reported. The synthesis of the free base H 2 TPFPOBP is also described. AllExpand
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The tetraphenylporphyrin with a bulky N-substituent group, N-o-tolyl-5,10,15,20-tetraphenylporphine (H(o-TolTPP)) has been synthesized and characterized by 1 NMR spectroscopy, secondary ion massExpand
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations. Revisions are based on new structural data,Expand
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Abstract Several procedures have been proposed to accelerate the slow rate of metalloporphyrin formation. This article describes kinetic and mechanistic aspects of the incorporation of metal ionsExpand