Proton magnetic resonance studies of 4-(2-pyridylazo)resorcinol (PAR) and its cobalt(III) complexes.
スポンサーリンク
概要
- 論文の詳細を見る
The <SUP>1</SUP>H NMR spectra of PAR, [Co<SUP>III</SUP>(par)<SUB>2</SUB>]<SUP>−</SUP>, and [Co<SUP>III</SUP>(par)(dien)]<SUP>+</SUP> were measured in D<SUB>2</SUB>O solutions. The signals were assigned. The deuteration of H<SUB>7</SUB> was observed in D<SUB>2</SUB>O solutions of free ligand PAR around pD 9–10, where PAR exists in the form of LH<SUP>−</SUP> having an intramolecular hydrogen-bond. The significant up-field shift for the resonance of H<SUB>1</SUB> was observed in [Co<SUP>III</SUP>(par)<SUB>2</SUB>]<SUP>−</SUP> but not in [Co<SUP>III</SUP>(par)(dien)]<SUP>+</SUP>. The shift was interpreted in terms of the magnetic anisotropy due to the π-electron system of the neighboring PAR molecule in the complex. The down-field shift for the resonance of the H<SUB>5</SUB> signal of the cobalt(III) complexes reflects the structural change of PAR upon chelate-ring formation. PAR coordinates to cobalt(III) ion in planar terdentate fashion, <I>viz</I>., in a <I>mer</I> configuration.
- 公益社団法人 日本化学会の論文
著者
-
Mochizuki Katsura
Department Of Chemistry Faclty Of Science And Graduate School Of Integrated Science Yokohama City Un
-
FUJIMOTO Masatoshi
Department of Chemistry, Faculty of Science, Hokkaido University
-
Ito Tasuku
Department of Applied Molecular Science, Institute for Molecular Science
-
Ito Tasuku
Department of Chemistry, Faculty of Science, Hokkaido University
関連論文
- Childhood psoriasis associated with Turner syndrome
- Organo-Rhodium Complex with Tridentate Biradical Ligand, [Rh(Cp^※)(bisnitpy)](PF_6)_2
- Tetra- and Di-Nuclear Copper(II) Complexes with Stereoisomers of Sulfinylcalix[4]arene Arising from the Disposition of Four S=O Groups
- Synthesis and Structural Characterization of a Pd^ Complex with p-tert-Butylsulfinylcalix[4]arene
- Sulfonylcalix[4]arene as a Bis-Tridentate Facial Ligand: Syntheses and Structures of Dinuclear Complexes, [M_2(L)(H_2O)_2(dmf)_4] (M = Co(II),Ni(II);H_4L = p-tert-Butylsulfonylcalix[4]arene
- Mixed Chromium(III)-Ruthenium(III) Trinuclear Complex, [CrRu_2(μ_3-O)(μ-CH_3COO)_6(pyridine)_3]^+
- Topological Variation between Hexa- and Trithiacalix[6]arene-Copper(II) Complexes : From Sphere to Wheel by Reducing the Number of the Sulfur Bridges
- A p-tert-Butyldithiacalix[4]arene-Copper(II) Complex Having Double-cone Shape of Unique Heteroditopie Inclusion Behavior
- p-tert-Butylthiacalix[6]arene as a Clustering Ligand. Syntheses and Structures of Co^_5, Ni^_4, and Mixed-Metal M^Ni^_4 (M=Mn, Co, and Cu) Cluster Complexes, and a Novel Metal-Induced Cluster Core Rearrangement
- The Heterogeneous Interaction of Substoichiometric TNP-ATP and F_1-ATPase from Escherichia coli
- Association of Micropenis with Pro185Ala Polymorphism of the Gene for Aryl Hydrocarbon Receptor Repressor Involved in Dioxin Signaling
- Structure and Vibrational Spectra of Trinuclear Metal Cluster Complexes. A Question of Symmetry
- Synthesis and Characterization of the Au_ Cluster with Sterically Demanding Phosphine Ligands by Single Crystal X-ray Diffraction and XPS Spectroscopy
- Triangular Platinum(II) Cluster Complexes and Cluster Core Transformation From Square-Planar to Triangular Type
- Dinuclear Oxomolybdenum(V) and Oxotungsten(V) Complexes of the Hexadentate Ligands N,N,N',N'-Tetrakis(2-pyridylmethyl)ethylenediamine and Its Propylenediamine Analog
- Preparation and Electrochemical Response of Poly(4-vinylpyridine)- Coordinated Oxo-acetato Triruthenium Cluster Film
- Synthesis of Trinuclear Molybdenum Cluster Complex with Novel Skeleton, [Mo_3(μ_3-CCH_3)(μ_3-O)(μ-C_6H_5COO)_6(CH_3OH)_3]Cl
- A Strongly Coupled Mixed Valence State Between Ru_3 Clusters. Intramolecular Electron Transfer on the Infrared Vibrational Time Scale in a Pyrazine (pz) Bridged Dimer of Triruthenium Clusters, [{Ru_3(μ_3-O)(μ-CH_3CO_2)_6(CO)(abco)}_2(μ-pz)] (abco=1-azabic
- Cage-Type Hexacopper(II) Complex Formed by Chloride Template
- Synthesis of an Electron Pooling Ligand Based on Triruthenium Clusters and Electrochemical Reduction of CO_2 by Its Zinc(II) Complex
- Structures and Magnetic Properties of Di and Tetranuclear Nickel(II) Complexes with Schiff Base Ligands
- 14 Step-15 Electron Reversible Redox Behavior of Tetrameric Oligomer of Oxo-Bridged Triruthenium Cluster
- Stepwise Elongation of a Trinuclear Ruthenium Unit in Pyrazine-Bridged Linear Oligomers with Use of[Ru_3(μ_3-O)(μ-CH_3COO)_6(pyridine)(CO)(H_2O)]
- Open and Closed Conformations of Binuclear Cu(II) Complexes with a Bimacrocyclic Ligand Linked by a Tetramethylene Chain
- Steric Effects of Axial Methly Substituents on Axial Coordination of Macrocyclic Nickel(II) and Cobalt(III) Complexes
- A Diradical Bridging Ligand with a Triplet Ground State
- A Novel Bimacrocyclic Ni(II) Complex Comprised of Both Trans-I and Trans-III Configurations
- ROTUNDIFOLIA4 Regulates Cell Proliferation Along the Body Axis in Arabidopsis Shoot
- Twenty-Five Millisecond Resolution Time-Resolved X-Ray Absorption Spectroscopy in Dispersive Mode
- Preparation and Properties of Oxo-Centered Trinuclear Chromium(III) Complexes with Bridging Optically Active Amino Acids, (Cr3(.MU.3-O)(.MU.-O,O'-amino-acid)6(H2O)3)7+.
- Mechanism of the reactions of oxomolybdenum(V) tetraphenylporphyrin complex with alcohols in the presence of superoxide.
- Structural studies of thiocyanato and isothiocyanato cobalt(III) complexes ligating diamine-N,N'-polycarboxylates.
- Nocovalent interactions in metal complexes. 14 Proton NMR spectroscopic investigation on stereoselectivity in cobalt(III) complexes of various 3-substituted 1-phenyl-1,3-propanediones.
- X-ray structural study on molecular stereochemistries of six-coordinate Zn(II) complexes of trans-ZnX2N4 type. Out-of-plane displacement of Zn(II) from a plane formed by in-plane four nitrogens.
- Preparation and characterization of (Co(acetylacetonato)(diamine or 2,2'-bipyridyl)(aminoalkylphosphine))2+. Crystal structure of (+)5C3D1-.LAMBDA.-fac(N)-(acetylacetonato){(1R,2R)-1,2-cyclohexanediamine}{(2-aminoethyl)diphenylphosphine}cobalt(III) perchl
- Efficient synthesis and structure of bis(acetonitrile(11,13-dimethyl-1,4,7,10-tetraaza-10,13-cyclotridecadien-12-ylidene)nickel(II)) perchlorate.
- Thermochromism of metal chelates with triphenylmethane complexons in aqueous solutions. III. Copper(II)-methylthymol blue and -methylxylenol blue systems.
- Proton magnetic resonance studies of 4-(2-pyridylazo)resorcinol (PAR) and its cobalt(III) complexes.
- Effect of trace water in chloroform on coordination mode of the tetraazamacrocyclic complex comprised of nickel(II) bromide and 7R(S),14S(R)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane.
- Thermochromism of metal chelates with triphenylmethane complexons in aqueous solutions. II. Inhibitive effects of the protolysis of aqua Cu2+ ion on the thermochromism of Cu(II)-xylenol orange chelate.
- A Proton Magnetic Resonance Study of Cobalt(III) Complexes Containing 1,10-Phenanthroline and Ethylenediamine
- Purification of methylthymol blue and methylxylenol blue by high-performance liquid chromatography.
- Syntheses, characterization, and structures of (monomethyl carbonato)-nickel(II), -copper(II), and -cobalt(II) complexes with tetraazacycloalkanes obtained from CO2 uptake.
- Spin-state equilibria of the nickel(II) complexes of 2,12-dimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),2,11,13,15-pentaene analogs in water.
- Synthesis and structure of (nitroacetato)((7RS,14RS)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane)nickel(II), (Ni(na)(Me6(14)aneN4)).
- Dehydration associated with high-spin to low-spin conversion of 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-nickel(II) halide dihydrate.
- Rate and Mechanism of the Complex Formation of Thallium(III) with 4-(2-Pyridylazo)resorcinol (PAR) in Aqueous Solution
- Kinetics of the Substitution of Acetonitrile in (Acetonitrile)chlorobis(triphenylphosphine)rhodium(I) by Triphenylphosphine
- The rates of the hydrogenation of the coordinated styrene and acrylonitrile in a rhodium-olefin complex [RhClH2(ol)(PPh3)2].
- A note on the rates of complex formation of indium(III) with murexide and the decomposition of murexide in the presence of indium(III).
- Kinetics of the oxidative addition of hydrogen to chloro(acrylonitrile)-bis(triphenylphosphine)rhodium(I) in benzene.
- Substitution reactions of (acetonitrile)chlorobis(triphenylphosphine)rhodium(I) in benzene.
- The effect of halo ligand on the rate of hydrogenation of coordinated olefin in dihydrido-olefin complexes RhXH2(ol)(PPh3)2(X=Cl, Br, I).
- Kinetic study on dimerization of chlorotris(triphenylphosphine)rhodium(I) in benzene.
- Thermochromism of metal chelates with triphenylmethane complexons in aqueous solutions. I. Copper(II)-xylenol orange system.
- Kinetic Study of the Formation and Decomposition of Amylose-iodine-iodide Complex
- Reaction of bis[1-(2-pyridylazo)-2-naphtholato[cobalt(III) chloride, [Co3(pan)2]Cl, with hyperoxide in dimethyl sulfoxide.
- Kinetics and Mechanisms of the Reaction of Fe(III) with Variamine Blue, [N-(p-Methoxyphenyl)phenylenediamine] in Aqueous Perchlorate Media
- Kinetics and Mechanisms of the Reactions of Ce(IV) and Co(III) with Variamine Blue, [N-(p-Methoxyphenyl)phenylenediamine], in Aqueous Perchlorate Media
- Reaction Rates and Mechanisms of the Formation of Gallium(III), Indium(III), and Thallium(III) Complexes with Semi-Xylenol Orange in Aqueous Solutions
- Absorption spectra of new oxomolybdenum(V) complexes of tetraphenylporphyrin with univalent ligands.
- Determination of hyperoxide in dimethyl sulfoxide by photometric titration with iodine.
- Synthesis and square planar-octahedral equilibrium of bismacrocyclic dinickel(II) complexes with polymethylene bridges of various lengths.
- Formation of the N,N-bidentate chelates of 2-(2-pyridylazo)phenolic ligands with nickel(II) in nonaqueous solvents.
- Kinetic study of oxidative addition and replacement reactions of chlorotris(triphenylphosphine)rhodium(I) in benzene.
- Reaction Rates in the Monomer-Dimer Equilibrium of TCNQ Anion Radicals as Studied by the Temperature-Jump Method
- Photochemical behavior of aluminum-ethyl complex with tetraaza macrocyclic ligand, Al(C22H22N4)(C2H5).
- Synthesis of (6-(1,4,7,10-Tetraaza-12-cyclotridecyl)-1,4,8,11-tetraazacyclotetradecane)dinickel(II) Perchlorate and Its Electrocatalytic Property for Water Reduction.
- Nitric acid oxidation of 3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-dienenickel(II) perchlorate.
- Kinetics of the Aquation of Iron(III) Monophenolate Complexes; Absence of the Acid-dependent Path
- The structures of trans-dichloro- and trans-bis(isothiocyanato)nickel(II) complexes with 1,4,8,11-tetraazacyclotetradecane, 1,4,8,12-tetraazacyclopentadecane, and 1,5,9,13-tetraazacyclohexadecane. The negative correlation between the axial and in-plane co