Emerich Bartha
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View article: Dihedral and Tetrahedral Angles of Five- and Six-Membered Rings Calculated from NMR Data with Three-Sphere Approach
Dihedral and Tetrahedral Angles of Five- and Six-Membered Rings Calculated from NMR Data with Three-Sphere Approach Open
3-sphere approach enable calculation of dihedral θHnHn + 1 [deg] and tetrahedral angles φCn [deg] from NMR data, vicinal coupling constant 3JHH [Hz] and chemical shift δCn [deg]. Physical properties used on conformational and configuration…
View article: 3-Sphere Tetrahedral Angles and Phase Angle of the Pseudorotation P[deg] of C<sub>1</sub>-CH<sub>3</sub>-α-D Ribitol Iminocyclitol
3-Sphere Tetrahedral Angles and Phase Angle of the Pseudorotation P[deg] of C<sub>1</sub>-CH<sub>3</sub>-α-D Ribitol Iminocyclitol Open
3-Sphere dihedral angles θ<sub>HnHn+1</sub>[deg] calculated from NMR data, from vicinal coupling constant <sup>3</sup><I>J</I><sub>HnHn+1</sub>[Hz] with right sign and stereochemistry, are us…
View article: 3-Sphere Approach on 9-O-(10,11-di-O-benzyl-12,14-O-benzylidene-α-D-galactopyranosyl)-1-butyl-2,3-O-isopropylidene-1,4-dideoxy-1,4-imino-1-&lt;I&gt;N&lt;/I&gt;-dehydro-L-ribitol
3-Sphere Approach on 9-O-(10,11-di-O-benzyl-12,14-O-benzylidene-α-D-galactopyranosyl)-1-butyl-2,3-O-isopropylidene-1,4-dideoxy-1,4-imino-1-<I>N</I>-dehydro-L-ribitol Open
The conformation of 9-O-(10,11-di-O-benzyl-12,14-O-benzylidene-α-D-galactopyranosyl)-1-butyl-2,3-O-isopropylidene-1,4-dideoxy-1,4-imino-1-N-dehydro-L-ribitol 1, phase angles of the pseudorotation of five (C3) and six (C
View article: 1-Α-Methyl-1,4-Imino-1,4-Dideoxy-D-Ribitol Conformational Analysis with 3-Sphere Approach
1-Α-Methyl-1,4-Imino-1,4-Dideoxy-D-Ribitol Conformational Analysis with 3-Sphere Approach Open
View article: Synthesis, Spectral and Dtf Studies of Zn (Ii)And Cd (Ii)Complexes with N, N-Bis(3,3-Dimethyl-Allyl)-Dithiocarbamate and Their Use as Precursors For Polyacrylonitrile-Metal Sulphide Nanofibers
Synthesis, Spectral and Dtf Studies of Zn (Ii)And Cd (Ii)Complexes with N, N-Bis(3,3-Dimethyl-Allyl)-Dithiocarbamate and Their Use as Precursors For Polyacrylonitrile-Metal Sulphide Nanofibers Open
View article: Graph Flux Intensity and Electromagnetic Wave on 3-sphere Approach
Graph Flux Intensity and Electromagnetic Wave on 3-sphere Approach Open
3-Sphere characteristic angles (θ nN with n = 1-6, and ϕ nN with n = 1, 2, N = A, B, C, CA, CB) are calculated from NMR data, the differences in chemical shifts between two atoms of carbon ∆δ CnCn+1 [ppm] and vicinal coupling constant 3 J …
View article: Topology on Nature: Isomerization of Five Membered Ring Tetrahedral Angles
Topology on Nature: Isomerization of Five Membered Ring Tetrahedral Angles Open
Tetrahedral angles of five membered ring are disclosed from the polyhedron geometry point of view, dodecahedron and icosahedron geometry under Fibonacci number. The number of carbons on carbasugar follows the Fibonacci sequence, each carbo…
View article: 3-Sphere Torsional Angles and Six Membered Ring Conformation
3-Sphere Torsional Angles and Six Membered Ring Conformation Open
The conformation of six membered ring, 1,3,4-tri-o-acetyl-2-azido-6-bromo-2,6-dideoxy-D-galactose α-1 and β-1, and 2,6-dideoxy-2,6-imino- D-talonic acid 2D and L-talonic acid 2L, is analyzed inscribing two five membered ring on six membere…
View article: Configurational and Conformational Analysis of 5-deoxy-5-iodo-α,β-D-ribose with 3-Sphere Approach
Configurational and Conformational Analysis of 5-deoxy-5-iodo-α,β-D-ribose with 3-Sphere Approach Open
Configurational and conformational analysis with 3-Sphere approach on selective iodination of α, β-methyl D-ribofuranose (2-α:2-β) with iodotriphenilphosphonium iodide complex [Ph3P+I]I- generated in situ, …
View article: Hopf Fibration on Relationship Between Dihedral Angle θ&lt;sub&gt;HnHn+1&lt;/sub&gt;[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script
Hopf Fibration on Relationship Between Dihedral Angle θ<sub>HnHn+1</sub>[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script Open
3-Sphere theory, a hypersphere in four dimensions, is applied for calculation dihedral angles with the right stereochemistry and sign in D, -L ribitol series from proton and carbon chemical shift (ΔδXnXn+1[ppm], X = H, C) and vi…
View article: CCDC 1852228: Experimental Crystal Structure Determination
CCDC 1852228: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1852229: Experimental Crystal Structure Determination
CCDC 1852229: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Dihedral angle beyond unit with seven sets on 3-sphere approach
Dihedral angle beyond unit with seven sets on 3-sphere approach Open
View article: Attempts to Upcycle PET Wastes into Bio-based Long-lasting Insulating Materials
Attempts to Upcycle PET Wastes into Bio-based Long-lasting Insulating Materials Open
Following the green chemistry principles, three series of polyols with tailored chemical structures were obtained from PET wastes degradation via glycolysis and/or aminolysis and subsequent esterification-transesterification and/or amidati…
View article: CONTENTS 7 / 2019
CONTENTS 7 / 2019 Open
View article: Functionalized 1,5,7-triazabicyclo [4.4.0] dec-5-ene (TBD) as Novel Organocatalyst for Efficient Depolymerization of Polyethylene Terephthalate (PET) Wastes
Functionalized 1,5,7-triazabicyclo [4.4.0] dec-5-ene (TBD) as Novel Organocatalyst for Efficient Depolymerization of Polyethylene Terephthalate (PET) Wastes Open
Poly(ethyleneterephthalate) waste was efficiently depolymerized through glycolysis and aminolysis reactions in the presence of functionalized 1,5,7-triazabicyclo [4.4.0] dec-5-ene (TBD) catalyst. The new catalyst of monoamide-ester type, w…
View article: Mechanistic Investigations of the Organocatalytic Depolymerization of PET Waste with Isosorbide
Mechanistic Investigations of the Organocatalytic Depolymerization of PET Waste with Isosorbide Open
Glycolysis of PET waste with isosorbide, a biomass derived diol, was catalyzed by commercially available 1,5,7-triazabicyclo [4.4.0] dec-5-ene (TBD) at temperature up to 190�C when low molecular weight oligomer containing at least one equi…
View article: Vibrational and electronic circular dichroism studies on the axially chiral pyridine-N-oxide: trans-2,6-di-ortho-tolyl-3,4,5-trimethylpyridine-N-oxide
Vibrational and electronic circular dichroism studies on the axially chiral pyridine-N-oxide: trans-2,6-di-ortho-tolyl-3,4,5-trimethylpyridine-N-oxide Open