The magnetic shielding function of molecules and Pi-electron delocalization

T Heine, C Corminboeuf, G Seifert - Chemical reviews, 2005 - ACS Publications
Measurement and theoretical prediction of magnetic properties have become an essential
tool for the chemical community. Today, NMR spectroscopy is probably the most powerful of …

One hundred years of benzotropone chemistry

A Dastan, H Kilic, N Saracoglu - Beilstein Journal of Organic …, 2018 - beilstein-journals.org
BJOC - One hundred years of benzotropone chemistry Journal Logo Diamond Open Access
Logo Beilstein Institut Open main menu / Home / Articles / SUBMISSION / About / The BJOC …

A theoretical study of aromaticity in squaramide and oxocarbons

D Quiñonero, A Frontera, P Ballester, PM Deyà - Tetrahedron Letters, 2000 - Elsevier
A systematic estimation of aromaticity in oxocarbon acids, their dianions, squaramide and its
complex with the ammonium cation have been studied using structural and magnetic …

A theoretical study of aromaticity in squaramide complexes with anions

D Quiñonero, R Prohens, C Garau, A Frontera… - Chemical physics …, 2002 - Elsevier
A systematic estimation of aromaticity in squaramide complexes with anions has been
studied using structural and magnetic criteria. Results based on Nucleus Independent …

Norcorrole: Aromaticity and antiaromaticity in contest

PB Karadakov - Organic Letters, 2020 - ACS Publications
Magnetic shielding studies demonstrate that nickel norcorrole (NiNc) and norcorrole (H2Nc)
provide unusual examples of stable molecules with high antagonistic levels of …

Nucleus-independent chemical shifts from semiempirical calculations

S Patchkovskii, W Thiel - Molecular modeling annual, 2000 - Springer
A recently developed special MNDO parameterization for NMR chemical shifts is used to
compute the nucleus-independent chemical shifts (NICS) for a wide range of organic …

Chemical Shifts of the [N]Phenylenes and Related Compounds

JM Schulman, RL Disch, H Jiao… - The Journal of Physical …, 1998 - ACS Publications
Proton chemical shifts and nucleus-independent chemical shifts (NICS) have been
computed for [N] phenylenes and related compounds using the GIAO/HF method. Proton …

Aromaticity in the Electronic Ground and Lowest Triplet States of Molecules with Fused Thiophene Rings

E Cummings, PB Karadakov - Chemistry–A European Journal, 2024 - Wiley Online Library
Abstract Analysis of the variations of the off‐nucleus isotropic magnetic shielding, σiso (r),
around thiophene, thienothiophenes, dithienothiophenes and sulflowers in their electronic …

A Comparison of the Cope Rearrangements of cis-1,2-Divinylcyclopropane, cis-2,3-Divinylaziridine, cis-2,3-Divinyloxirane, cis-2,3-Divinylphosphirane, and cis-2,3 …

M Zora - The Journal of Organic Chemistry, 2005 - ACS Publications
Transition structures, energetics, and nucleus-independent chemical shifts (NICS) for Cope
rearrangements of cis-2, 3-divinylaziridine (1N), cis-2, 3-divinyloxirane (1O), cis-2, 3 …

Nucleus-independent chemical shift evaluation for benzo-and dibenzo-fused pyrrole, furan and thiophene derivatives

M Zora, İ Özkan - Journal of Molecular Structure: THEOCHEM, 2003 - Elsevier
Aromaticity of pyrrole, indole, isoindole, indolizine, carbazole, furan, benzofuran,
isobenzofuran, dibenzofuran, thiophene, benzothiophene, benzo [c] thiophene and …