Circular dichroism spectra of fac(D)-(Co(a)(BC)(DDD))n+ type complexes with 1,4,7-triazacyclononane, (2R)-2-methyl-1,4,7-triazacyclononane, and 1,5,9-triazacyclododecane.

スポンサーリンク

概要

• 論文の詳細を見る

• The complexes, [Co(L-val)(NH<SUB>3</SUB>)(tacn)]<SUP>2+</SUP> (tacn=1,4,7-triazacyclononane), [Co(gly)(NH<SUB>3</SUB>)(Me-tacn)]<SUP>2+</SUP> (Me-tacn=(2<I>R</I>)-2-methyl-1,4,7-triazacyclononane) have been prepared and separated into diastereomers by column chromatography. Six other complexes, [Co(a)(β-ala)(tacn)]<SUP><I>n</I>+</SUP> (a=CN<SUP>−</SUP>, NO<SUB>2</SUB><SUP>−</SUP>, or NH<SUB>3</SUB>) and [Co(a)(gly)(tacdd)]<SUP><I>n</I>+</SUP> (a=NO<SUB>2</SUB><SUP>−</SUP>, NCS<SUP>−</SUP>, or H<SUB>2</SUB>O; tacdd=1,5,9-triazacyclododecane) have also been prepared and resolved into enantiomers. By comparing the CD spectra of the L-valinato and the Me-tacn complexes with that of [Co(gly)(NH<SUB>3</SUB>)(tacn)]<SUP>2+</SUP>, the optical activities of [Co(a)(gly)(tacn)]<SUP>+</SUP> are considered to be mainly derived from chiral arrangements of four kinds of donor atoms. The change from five-membered chelate ring to a six-membered one has slight influence upon the CD spectral shapes in the β-alaninato complex, but a large influence in the tacdd complexes.

• 公益社団法人 日本化学会の論文

著者

• Fujinami Shuhei

  Department Of Chemical Science Graduate School Of Natural Science And Technology Kanazawa University

• Shibata Muraji

  Department of Chemistry Faculty of Science Kanazawa University

• Matsunami Yukio

  Department of Chemistry, Faculty of Science, Kanazawa University

関連論文

• X-ray studies of structural changes in melanophlogite with varying temperature
• Dioxygen Reactivity of Copper (I) Complexes with Tetradentate Tripodal Ligands Having Aliphatic Nitrogen Donors : Synthesis, Structures, and Properties of Peroxo and Puperoxo Complexes
• Total Syntheses of Phycocyanobilin Derivatives Bearing a Modified A-Ring toward the Structure/Function Analysis of Phytochrome
• Modulation of the Copper-Dioxygen Reactivity by Stereochemical Effect of Tetradentate Tripodal Ligands
• Bis(u - oxo)(u - hydroxo)triiron(III) and (u - oxo)(u - hydroxo)diiron(III) Core Complexes with Tripodal Ligands Having a Terminal Carboxylate Group
• A Rare μ_3η^1, η^2 Perolxo Bridge between Two Co^Pb^ Dinuclear Units and Hydrolytic Conversion into a Hydroxo-Bridged Co^Pb^ Complex
• Thermodynamic Study on Dioxygen Binding of Diiron(II)and Dicobalt(II) Complexes Containing Various Dinucleating Ligands
• Asymmetric 1,3-Dipolar Cycloaddition of Nitrones with an Electron-Withdrawing Group to Allylic Alcohols Utilizing Diisopropyl Tartrate as a Chiral Auxiliary
• Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Imines to Homoallytic Alcohols
• Oxidation of pyrrole-2-carboxylates with o-chloranil and its synthetic application
• Asymmetric 1,3-Dipolar Cycloaddition Reaction of Azomethine Imines to Allyl Alcohol
• Catalytic Asymmetric Addition of Alkynylzinc Reagents to Nitrones
• The First Enantioselective Hetero Diels-Alder Reaction of Nitroso Compound Utilizing Tartaric Acid Ester as a Chiral Auxiliary
• Catalytic Asymmetric 1,3-Dipolar Cycloaddition of a Nitrone Bearing a Bulky Amide Moiety to γ-Substituted Allylic Alcohols
• Asymmetric 1,3-Dipolar Cycloaddition of Nitrile Oxides to γ-Substituted Allylic Alcohols
• Reversible Oxygenation of a μ-Acetato-di (μ-phenoxo) dicobalt (II) Core Complex and Crystal Structure of Its Oxygenated Complex
• Formation of a Tetranuclear High-Spin Iron(II, III, II, III) Mixed Valence Complex
• Total Syntheses of Sterically Locked Phycocyanobilin Derivatives Bearing a 15Z-anti or a 15E-anti CD-Ring Component
• X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature
• A Mononuclear Peracetatoiron(III) Complex : Structural and Spectroscopic Characterization, and Oxidation Reactivity
• The Cobalt(III) Complexes of Ethylenediaminediacetic and Ammoniadiacetic Acids
• Preparation and Absorption Spectra of the Cobalt(III) Complexes of Amino Acids
• Adsorbabilities of Diacidotetrammine Type Cobalt (III) Complex Ions on a Cation Exchanger
• CD spectra and absolute configurations of fac(a,b,c)-(Co(a)(b)(c)(1,4,7-triazacyclononane))n5+ complexes.
• Circular dichroism spectra of cis,cis-(Co(OO)(N)2(py)2)+-type complexes.
• Circular dichroism spectra and absolute configurations of fac(NH3)-(Co(a)(gly)(NH3)3)n+-type complexes.
• The Preparation of Nitro-Carbonato and -Acetylacetonato Complexes of Cobalt(III) and Their IR and UV Spectra
• Absolute configuration and circular dichroism spectrum of all-cis(NO2,N,O)-(-)4C5D0(Co(NO2)2(gly)2)- complex.
• Circular dichroism spectra of fac(D)-(Co(a)(BC)(DDD))n+ type complexes with 1,4,7-triazacyclononane, (2R)-2-methyl-1,4,7-triazacyclononane, and 1,5,9-triazacyclododecane.
• Ion-exchange Chromatographic Studies of the [Co(N)4(O)2]+-type Complexes
• Circular dichroism spectra of cobalt(III) complexes of the [Co(O,O)2(N)2]--type.
• Isolation and circular dichroism of the isomers of dicyanobis((R,R)-1,2-cyclohexanediamine) and bis((S)-propylenediamine)cobalt(III) complexes.
• The preparation of 2,2'-bipyridinedicarbonato and dicarbonato-1,10-phenanthroline complexes of cobalt(III).
• The CD spectra of carbonato complexes of the (Co(CO3)(O,O)(N)2)- and (Co(CO3)(N)4)+ types and related diaqua complexes.
• The preparation and properties of cobalt(III) phosphine complexes containing nitrite and acetylacetonate ions.
• Circular dichroism spectra and absolute configurations of cis,cis,cis-(C,N,O)-dicyanobis(glycinato)cobaltate(III) and dicyanobis(.BETA.-alaninato)cobaltate(III) complexes.
• The Preparation and Absorption Spectra of the Geometrical Isomers of Carbonatoglycinatodiamminecobalt(III)
• Preparation and circular dichroism spectrum of a (triazacyclononane)(tribenzo(b,f,j)(1,5,9)triazacyclododecene)cobalt(III) complex.
• Theoretical prediction of cotton signs in CD spectra of .LAMBDA.-(Co(N)2(O)4)-- and .LAMBDA.-(Co(N)4(O)2)+-type complexes.
• Preparation, and structural and spectroscopic characterization of cobalt(III) phosphine complexes of the type, (Co(CN)4-2n(acac)n(P)2)(n-1)+ (acac=acetylacetonate ion, n=0,1,2, and P=P(CH3)x(C6H5)3-x, x=0,1,2,3).
• The preparation of mixed carbonato complexes of cobalt(III) with 2-pyridinecarboxylic acid.

もっと見る 閉じる

スポンサーリンク