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 vicinal coupling constant (3JHnHn+1[Hz]) with Java Script. A method in three steps, easy to calculate by hand or with Java Script program: 1. prediction of the dihedral angle only from 3JHnHn+1[Hz], 2. calculation the angle of set A with manifold equation (conic section, Villarceau circles) from chemical shift, 3. building of the seven sets unit or six sets units, from which is chose an angle almost equal with the predicted one having its stereochemistry and sign. Angles of set A and set B, relationships between vicinal angle and dihedral angle (X0-X15) are introduced instead of polar angle and azimuthal angle in spherical coordinates (eq. 1 versus eq. 3). Hopf coordinates, trigonometric equations, confirmed by algebraic equations are disclosed for all cis-ae/ea, trans-ee, trans-aa stereochemistry. Octonionic fibration S7→S15→S8 in R16, with real fibration S0 →S1 →S1 as unit, reassembles all possible stereochemistry gives by the HCCH fragment on two congruent disks, each centered on the perimeter of the other with equilateral triangles as vertices. Complex Hopf fibration in R4 ensuring the calculation of the dihedral angle from vicinal angle and vice versa, demonstrating the relationships between sets A, B, C.
Published in | Science Journal of Chemistry (Volume 10, Issue 1) |
DOI | 10.11648/j.sjc.20221001.13 |
Page(s) | 21-31 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2022. Published by Science Publishing Group |
3-sphere, Hopf Fibration, Villarceau Circles, Dihedral Angle, Vicinal Angle, Vicinal Coupling Constant, Java Script
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APA Style
Carmen-Irena Mitan, Emerich Bartha, Constantin Draghici, Miron-Teodor Caproiu, Petru Filip, et al. (2022). Hopf Fibration on Relationship Between Dihedral Angle θHnHn+1[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script. Science Journal of Chemistry, 10(1), 21-31. https://doi.org/10.11648/j.sjc.20221001.13
ACS Style
Carmen-Irena Mitan; Emerich Bartha; Constantin Draghici; Miron-Teodor Caproiu; Petru Filip, et al. Hopf Fibration on Relationship Between Dihedral Angle θHnHn+1[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script. Sci. J. Chem. 2022, 10(1), 21-31. doi: 10.11648/j.sjc.20221001.13
AMA Style
Carmen-Irena Mitan, Emerich Bartha, Constantin Draghici, Miron-Teodor Caproiu, Petru Filip, et al. Hopf Fibration on Relationship Between Dihedral Angle θHnHn+1[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script. Sci J Chem. 2022;10(1):21-31. doi: 10.11648/j.sjc.20221001.13
@article{10.11648/j.sjc.20221001.13, author = {Carmen-Irena Mitan and Emerich Bartha and Constantin Draghici and Miron-Teodor Caproiu and Petru Filip and Robert Michael Moriarty}, title = {Hopf Fibration on Relationship Between Dihedral Angle θHnHn+1[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script}, journal = {Science Journal of Chemistry}, volume = {10}, number = {1}, pages = {21-31}, doi = {10.11648/j.sjc.20221001.13}, url = {https://doi.org/10.11648/j.sjc.20221001.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjc.20221001.13}, abstract = {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 vicinal coupling constant (3JHnHn+1[Hz]) with Java Script. A method in three steps, easy to calculate by hand or with Java Script program: 1. prediction of the dihedral angle only from 3JHnHn+1[Hz], 2. calculation the angle of set A with manifold equation (conic section, Villarceau circles) from chemical shift, 3. building of the seven sets unit or six sets units, from which is chose an angle almost equal with the predicted one having its stereochemistry and sign. Angles of set A and set B, relationships between vicinal angle and dihedral angle (X0-X15) are introduced instead of polar angle and azimuthal angle in spherical coordinates (eq. 1 versus eq. 3). Hopf coordinates, trigonometric equations, confirmed by algebraic equations are disclosed for all cis-ae/ea, trans-ee, trans-aa stereochemistry. Octonionic fibration S7→S15→S8 in R16, with real fibration S0 →S1 →S1 as unit, reassembles all possible stereochemistry gives by the HCCH fragment on two congruent disks, each centered on the perimeter of the other with equilateral triangles as vertices. Complex Hopf fibration in R4 ensuring the calculation of the dihedral angle from vicinal angle and vice versa, demonstrating the relationships between sets A, B, C.}, year = {2022} }
TY - JOUR T1 - Hopf Fibration on Relationship Between Dihedral Angle θHnHn+1[deg] and Vicinal Angle ϕ[deg], Angles Calculated from NMR Data with 3-Shere Approach and Java Script AU - Carmen-Irena Mitan AU - Emerich Bartha AU - Constantin Draghici AU - Miron-Teodor Caproiu AU - Petru Filip AU - Robert Michael Moriarty Y1 - 2022/02/28 PY - 2022 N1 - https://doi.org/10.11648/j.sjc.20221001.13 DO - 10.11648/j.sjc.20221001.13 T2 - Science Journal of Chemistry JF - Science Journal of Chemistry JO - Science Journal of Chemistry SP - 21 EP - 31 PB - Science Publishing Group SN - 2330-099X UR - https://doi.org/10.11648/j.sjc.20221001.13 AB - 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 vicinal coupling constant (3JHnHn+1[Hz]) with Java Script. A method in three steps, easy to calculate by hand or with Java Script program: 1. prediction of the dihedral angle only from 3JHnHn+1[Hz], 2. calculation the angle of set A with manifold equation (conic section, Villarceau circles) from chemical shift, 3. building of the seven sets unit or six sets units, from which is chose an angle almost equal with the predicted one having its stereochemistry and sign. Angles of set A and set B, relationships between vicinal angle and dihedral angle (X0-X15) are introduced instead of polar angle and azimuthal angle in spherical coordinates (eq. 1 versus eq. 3). Hopf coordinates, trigonometric equations, confirmed by algebraic equations are disclosed for all cis-ae/ea, trans-ee, trans-aa stereochemistry. Octonionic fibration S7→S15→S8 in R16, with real fibration S0 →S1 →S1 as unit, reassembles all possible stereochemistry gives by the HCCH fragment on two congruent disks, each centered on the perimeter of the other with equilateral triangles as vertices. Complex Hopf fibration in R4 ensuring the calculation of the dihedral angle from vicinal angle and vice versa, demonstrating the relationships between sets A, B, C. VL - 10 IS - 1 ER -