Transition-metal Complexes of Pyrrole Pigments. III. Copper(II) and Zinc(II) Complexes of 1,19-Dideoxy-8,12-dicarbethoxy-1,3,7,13,17,19-hexamethylbiladiene-ac
スポンサーリンク
概要
- 論文の詳細を見る
The copper(II) and zinc(II) complexes of 1,19-dideoxy-8,12-dicarbethoxy-1,3,7,13,17,19-hexamethylbiladiene-ac were synthesized and investigated by near-ultraviolet, visible, near-infrared, infrared, NMR, and ESR measurements as well as X-ray diffraction measurements of powdered samples. The ligand-field bands appeared at 701 and 752 mμ for the copper complex provided information on its geometry around the central metal atom. Namely, the copper atom is subjected to the square-planar ligand-field in the complex. Infrared bands characteristic of asymmetric stretching vibration of the carbethoxy groups at 8 and 12, and X-ray powder diffraction pattern gave another support to this structure by referring to the corresponding data for the nickel complex. ESR measurements also provided the spin Hamiltonian parameters consistent with the square-planar coordination. The most plausible structure for the zinc complex was concluded to be the binuclear form with tetrahedral coordination in conformity with that for the cobalt complex, which was revised in this work. Infrared bands in the 1100–1300 cm<SUP>−1</SUP> range due to asymmetric vibration of the ester groups at 8 and 12, and X-ray powder pattern provided the evidence for this structure in reference to the corresponding data for the cobalt complex. The up-field shift of proton signals due to the methyl groups at 1, 7, 13, and 19, the 10-methylene group, and to the ethyl moiety of carbethoxy groups at 8 and 12 upon coordination are consistent with the tetrahedral coordination with dimeric structure. The molecular weight determination also confirmed the dimeric nature of the zinc complex.
- 公益社団法人 日本化学会の論文
著者
-
Murakami Yukito
Department Of Chemical Science And Technology Faculty Of Engineering Kyushu University
-
Matsuda Yoshihisa
Department Of Astronomy And Earth Science Tokyo Gakugei University
-
Kanaoka Yukiko
Department of Organic Synthesis, Faculty of Engineering, Kyushu University
関連論文
- Preparation and Characterization of Novel Cage-type Cyclophanes Having Three or Four Bridging Dipeptide Segments
- Catalytic Performance of a Supramolecular Bienzyme Complex Formed with Artificial Aminotransferase and Natural Lactate Dehydrogenase
- Stereoselective Synthesis of β-Phenylserine from Glycine and Benzaldehyde as Mediated by Catalytic Bilayer Membranes, Artificial Vitamin B_6-dependent Enzymes
- pH-Responsive Molecular Recognition by a Water-soluble Cyclophane Bearing L-Aspartate Moieties
- Photolysis of Hydrophobic Vitamin B_ Derivatives Covalently Bound to Lipid in Aqueous Media
- Enantioselective Alkylation of Hydrophobic Vitamin B_ Bearing Binaphthyl Moiety
- Discrimination of Steroid Hormones by Novel Cage-type Azacyclophanes Bearing Chiral Binding Sites
- β-Replacement Reaction in an Asymmetric Site Provided by an Artificial Enzyme Composed of a Hydrophobic Vitamin B_6 and Peptide Lipids
- Enantioselective β-Replacement Reaction Mediated by an Artificial Enzyme Composed of a Hydrophobic Vitamin B_6, Chiral Bilayer-forming Lipids, and Copper(II) Ions
- Synthetic Cationic Amphiphile for Liposome-Mediated DNA Transfection with Less Cytotoxicity
- Primary carcinoid tumor in a horseshoe kidney
- Dose Control Study on Fentanyl Patch Using Two Types of Covering Material
- Promotion of Reductive Elimination Reaction of Diorgano (2, 2' -bipyridyl) nickel (II) Complexes by Electron-Accepting Aromatic Compounds, Lewis Acids, and Bronsted Acids
- Control of Reductive Elimination and Acidolysis of Diarylnickel(II) Complexes by the Kind of Bronsted Acid and the Presence of Oxygen
- Numerical experiments of two-level decaying turbulence on a rotating sphere
- Syntheses and Characterization of Phosphorinecopper(I) Halide Complexes
- Effects of lubricant mixing on compression properties of various kinds of direct compression excipients and physical properties of the tablets
- A Novel Ru(II)-DMSO Complex Having Non-coordinating 1-Naphthoylamide Arm : Effects of Intramolecular Hydrogen Bonding on Redox Potential of the Ruthenium Center
- A Novel and Highly Effective Halogenation of Alkanes with Halides on Oxidation with m-Chloroperbenzoic Acid : Looks Old, but New Reaction
- Synthesis and Characterization of Palladium(II)-Phosphole and -Biphosphole Complexes. Regulation of the Homoleptic Coordination Environment of Square-Planar Palladium(II)
- Numerical experiments on the behavior of Rossby waves in the critical layer
- Effect of Titanium Dioxide on Photostability of Solid-State Mequitazine
- Reactions of Molybdenum(V)porphyrins wuth Phenol Derivatives Involving Parallel Inner and Outer Sphere Electron Transfer
- Binuclear Molybdenum(V)porphyrins Bridged by Benzenediolate or Naphthalenediolate Dianion : Cooperative Coordination Equilibrium of Two Molybdenum Centers Involving Electron Transfer
- Photochemical and Oxidative Degradation of the Solid-State Tretinoin Tocoferil
- Effect of Polymorphic Forms of Bullk Powders on Pharmaceutical Properties of Carbamazepine Granules
- Effect of Polymorphic Transformation During the Extrusion-Granulation Process on the Pharmaceutical Properties of Carbamazepine Granules
- Physicochemical Characterization of Tamoxifen Citrate Pseudopolymorphs, Methanolate and Ethanolate
- Catalytic Hydrocarbon Oxygenation by a Dinuclear Ruthenium (II) Complex with Molecular Oxygen
- Molecular Recognition by a Cu (II)-2,2'-bipyridine Complex Involving Coordination and Hydrogen Bonding
- Evaluation of Titanium Dioxide as a Pharmaceutical Excipient for Preformulation of a Photo-Labile Drug : Effect of Physicochemical Properties on the Photostability of Solid-State Nisoldipine
- A Ruthenium(II)-Pyridylamine Complex Showing a Fluxional Intramolecular π-π Interaction
- Roles of Rossby and Gravity Waves on Circulation Associated with Tropical and Subtropical Heating
- Development of Novel Ozonizer Using Micro-Barrier Discharges Formed in Water
- Syntheses and Characterization of Palladium and Platinum Complexes of Phosphorin
- Aggregation behavior of amphiphiles functionalized with dipeptide segments and enantioselective ester hydrolysis in their bilayer membranes.
- Copper(II)-catalyzed transamination between pyruvate and hydrophobic pyridoxamine embedded in synthetic bilayer membranes.
- Catalytic efficiency of functionalized vesicles in the transamination of pyridoxal-5'-phosphate with a hydrophobic amino acid.
- An Efficient Method for the Synthesis of 4,5-Disubstituted Catechols
- Macrocyclic enzyme model system. Kinetic activity of (20)paracyclophane bearing 1,4-dihydronicotinamide and 2-pyridinecarboxylic acid moieties as effected by zinc ion.
- Functionalized bilayer membranes as artificial tryptophan synthase. Characterization of catalytic efficiency, substrate specificity, and reaction selectivity.
- Transition-metal complexes of pyrrole pigments. XIX. Electrochemical and coordination behaviors of (5,10,15,20-tetraphenylporphinato)niobium(V) complexes.
- A macrocyclic enzyme model system. An electrostatic-hydrophobic double-field catalysis by a [20]paracyclophane in the deacylation of p-nitrophenyl hexadecanoate.
- Transition-metal complexes of pyrrole pigments. XVII. Preparation and spectroscopic properties of corrole complexes.
- Transition-metal complexes of pyrrole pigments. XXI. One-electron oxidation of water mediated by a cobalt(III)-tetradehydrocorrin complex.
- Syntheses of Organic Phosphates. II. 3-Hydroxy-2-pyridylmethyl, 6-Methyl-2-pyridylmethyl, 3-Pyridyl and 8-Quinolyl Phosphate
- Substrate selectivity of artificial transaminase constituted with functionalized bilayer membrane.
- Aggregate morphology of peptide lipids having hydroxyl groups : Molecular basis for formation of inverted hexagonal, inverted cubic, bilayer, and micellar phases.
- Catalytic efficiency of cationic micellar catalysts bearing a mercapto group as the reaction center.
- Hydrophobic vitamin B12. III. Incorporation of hydrophobic vitamin B12 derivatives into single-compartment vesicles and their alkylation in various molecular aggregates.
- Hydrophobic vitamin B12. V Electrochemical carbon-skeleton rearrangement as catalyzed by hydrophobic vitamin B12 : Reaction mechanisms and migratory aptitude of functional groups.
- Catalytic Functions of Artificial Enzyme Composed of Simple Vitamin B12 Model and Synthetic Bilayer Membrane.
- Hydrophobic vitamin B12. II. Coordination geometry and redox behavior of heptamethyl cobyrinate in nonaqueous media.
- Macrocyclic enzyme model systems. Catalytic activity of cyclic peptides involving hydrophobic segments.
- Transformation between lamellar and nonlamellar aggregates formed with synthetic peptide lipids.
- Aggregate morphology and hydrogenation reactivity of functionalized bilayer membrane composed of peptide lipid having NADH activity.
- Fusogenic behavior of single-walled vesicles composed of synthetic peptide lipids.
- Hydrophobic vitamin B12. I. Preparation and axial ligation behavior of hydrophobic vitamin B12r.
- Transition-metal Complexes of Pyrrole Pigments. X. Divalent and Trivalent Manganese Chelates of Dipyrromethenes
- Transition-metal Complexes of Pyrrole Pigments. III. Copper(II) and Zinc(II) Complexes of 1,19-Dideoxy-8,12-dicarbethoxy-1,3,7,13,17,19-hexamethylbiladiene-ac
- Solvolysis of Organic Phosphates. VIII. γ-Elimination in the Spontaneous Hydrolysis of 2-Chloro-3-pyridylmethyl Phosphate
- Solvolysis of Organic Phosphates. IV. 3-Pyridyl and 8-Quinoly Phosphates as Effected by the Presence of Metal Ions
- Transition-metal complexes of pyrrole pigments. XII. Optical and magnetic resonance spectra of the cobalt(II) and nickel(II) complexes of 1,19-disubstituted tetradehydrocorrins.
- Transition-metal complexes of pyrrole pigments. XIII. Reduction and coordination behaviors of the cobalt(II) complexes of 1,19-disubstituted tetradehydrocorrins as demonstrated by the presence of various bases.