𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1H and 13C NMR chemical shift assignments of spiro-cycloalkylidenehomo- and methanofullerenes by the DFT–GIAO method

✍ Scribed by L. M. Khalilov; A. R. Tulyabaev; V. M. Yanybin; A. R. Tuktarov


Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
353 KB
Volume
49
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The ^1^H and ^13^C NMR chemical shifts of spiro‐cycloalkylidene[60]fullerenes were assigned using experimental NMR data and the Density Functional Theory (DFT)–Gauge Independence Of Atomic Orbitals method (GAIO) calculation method in the Perdew Burke Ernzerhof (PBE)/3z approach. The calculated values of the ^13^C NMR chemical shifts adequately reproduce the experimental values at this quantum chemistry approach. Similar assignments will be helpful for ^13^C NMR spectral analysis of homo‐ and methano[60]fullerene derivatives for structure elucidation and to determine the influence of fullerene frames on substituents and the influence of substituents on fullerene cores. Copyright © 2011 John Wiley & Sons, Ltd.


📜 SIMILAR VOLUMES


DFT-GIAO 1H and 13C NMR prediction of ch
✍ Marcelo A. Muñoz; Pedro Joseph-Nathan 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 154 KB 👁 1 views

## Abstract ^1^H and ^13^C NMR chemical shift calculations using the density functional theory–gauge including/invariant atomic orbitals (DFT–GIAO) approximation at the B3LYP/6‐311G++(d,p) level of theory have been used to assign both natural diastereoisomers of 6β‐hydroxyhyoscyamine. The theoretic

DFT-GIAO1H NMR chemical shifts predictio
✍ Marcelo A. Muñoz; Pedro Joseph-Nathan 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 179 KB 👁 1 views

## Abstract The relatively large chemical shift differences observed in the ^1^H NMR spectra of the anticholinergic drugs (−)‐scopolamine 1 and (−)‐hyoscyamine 2 measured in CDCl~3~ are explained using a combination of systematic/molecular mechanics force field (MMFF) conformational searches and ga

NMR spectroscopy in environmental chemis
✍ Erkki Kolehmainen; Jari Koivisto; Vladimir Nikiforov; Mikael Peräkylä; Kari Tupp 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 71 KB 👁 2 views

1 H and 13 C NMR spectra for seven chlorinated dibenzothiophenes (DBTs) were measured. Complete 1 H and 13 C NMR chemical shift assignments for 2, 8-and 3,7-dichloro-and 2,3,6,8-, 2,3,7,8-and 2,4,6,8-tetrachloro congeners are based on z-gradient selected inverse (proton detected) two-dimensional het

Assignment of 1H and 13C NMR Chemical Sh
✍ W. Ibrom; A. W. Frahm 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 422 KB 👁 2 views

H and 13C NMR chemical shifts and the homo-and heteronuclear coupling constants of 14 nitroxanthones are presented. Specific nitro increments for xanthones depending on substituent position and on the respective ring carbon position and shift additivity rules were developed by means of multiple line

Structure Determination of Regioisomeric
✍ Shamil Latypov; Alsu Balandina; Marco Boccalini; Alessandra Matteucci; Konstanti 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 276 KB 👁 1 views

## Abstract The combined use of 2D NMR correlation experiments and GIAO DFT ^13^C NMR chemical shift calculations has allowed a reliable and simple structural determination of regioisomeric heterocyclic systems that originate from the reactions of quinolinone or coumarin derivatives with hydroxylam