Electron-spin-resonance Studies of the Formation and Properties of the Trimeric Vanadyl Dibutylphosphate Complex

スポンサーリンク

概要

• 論文の詳細を見る

• The extraction of the vanadyl ion (VO<SUP>2+</SUP>) from aqueous solutions by di-<I>n</I>-butylphosphoric acid ((C<SUB>4</SUB>H<SUB>9</SUB>O)<SUB>2</SUB>-PO<SUB>2</SUB>H) in hexane has been studied by ESR. It has been found that monomeric and trimeric vanadyl di-<I>n</I>-butylphosphate complexes were present in the organic phase, and the equilibrium constant of the reaction involving monomeric and trimeric forms was determined. The ESR spectrum of the trimeric complex, characterized by 22 hf lines with a separation of 39 gauss, was interpreted as resulting from the magnetic exchange interaction between three vanadyl ions. A crystalline vanadyl complex was isolated from the hexane solution and found to be (VOX<SUB>2</SUB>)<SUB>3</SUB>, where X represents (C<SUB>4</SUB>H<SUB>9</SUB>O)<SUB>2</SUB>PO<SUB>2</SUB><SUP>−</SUP>. The properties of the complex were investigated by means of ESR, IR, and the optical absorptions. The mechanism of the extraction of VO<SUP>2+</SUP> by (C<SUB>4</SUB>H<SUB>9</SUB>O)<SUB>2</SUB>PO<SUB>2</SUB>H was discussed, and a cyclic model was proposed for the structure of (VOX<SUB>2</SUB>)<SUB>3</SUB>.

• 公益社団法人 日本化学会の論文

著者

• Fujita Yuzaburo

  Faculty Of Pharmaceutical Sciences Okayama University

• Kwan Takao

  Faculty Of Pharmaceutical Sciences Teikyo University

• Sato Mitsuo

  Faculty Of Engineering Tohoku University

• Takayanagi Teruo

  Faculty of Pharmaceutical Sciences, The University of Tokyo

関連論文

• ERYTHROCYTE SHAPE CHANGES AND SIMULTANEOUS TETRAETHYLAMMONIUM ION UPTAKE INDUCED BY AMPHIPHILIC COMPOUNDS
• INTERACTION OF HIGHLY BIOACTIVE GRAMICIDIN S ANALOG LACKING HYDROPHILIC AMINO ACID RESIDUES WITH BIOMEMBRANES
• DIFFERENT MODE OF ACTION OF GRAMICIDIN S AND MASTOPARAN ON BIOMEMBRANES
• STRUCTURES AND ACTIVITIES OF TANNINS IN CRUDE DRUGS (3)
• A Self-Adaptive Fuzzy Recognition System for Driving Environment
• VESICULATION OF PLATELET PLASMA MEMBRANES INDUCED BY SYNTHETIC PHOSPHATIDYLCHOLINES
• PC16 TANNINS AS RADICAL SCAVENGERS
• ESR STUDIES ON THE INTERACTION BETWEEN HEMATIN AND APO-P-450 IN RABBIT BRAIN
• THE σ-AND π-BONDING CHARACTER IN IRON (II) PORPHYRINS
• PREPARATION AND SPECTROSCOPIC STUDIES OF LOW-SPIN IRON (II) PORPHYRIN COMPLEXES WITH BIS (PHOSPHINE) OR BIS (PHOSPHITE) AXIAL LIGANDS
• ESR Studies of the Sulfite Radical Anion
• The Methylation of the Mercuric Ion by Methylcobaloximes
• Alkyd resin paint as a new membrane material of ion-selective electrode.
• An ESR Study of Methylamino Radicals Photoproduced on the Porous Vycor Glass Surface
• The ESR Spectra of Alkyl Radicals Formed in UV-irradiated Trialkyl Phosphate Glasses
• ESR Evidence for the Destruction of the Four-membered Chelate Structure of Bis(O,O′-diethyldithiophosphato)oxovanadium(IV) by Pyridine Bases
• The Photosensitized Decomposition of Methane Adsorbed on Porous Vycor Glasses Coated with Metal Oxides at 77°K
• An ESR study of photo-induced electron transfer reaction between zinc(II)-tetraphenylporphyrin and p-benzoquinone in solutions.
• Electron-spin-resonance Studies of the Formation and Properties of the Trimeric Vanadyl Dibutylphosphate Complex
• ESR Studies of the (RO)2PSS Radicals in UV-Irradiated O,O′-Dialkyl Dithiophosphate Glasses
• NH2 Radicals Trapped on the Surface of Porous Vycor Glass at 77 K
• A Novel Type of Methyl Radical Trapped in Porous Vycor Glass at 77°K
• The Role of Anion in the Demethylation Reaction of Methylcobalamin with Mercuric Salts
• The Ligation of Phosphine Derivatives and the Oxygen-binding Properties of the Cobalt Mesoporphyrin IX Dimethyl Ester in Toluene
• An Electron Spin Resonance Study of the Steroid Conformation –6-Oxohelvolic Acid (Triketone)–
• The Cation-radical Salts of p-Phenylenediamine. A Modified Method of Preparation and the Electrical Resistivity of the Salts
• Some Environmental Effects on the shf Lines in the ESR Spectra of Vanadyl Tetraphenylporphin
• Spin label study of the effect of ticlopidine on platelets.

もっと見る 閉じる

スポンサーリンク