Primary  1 H/ 2 H isotope effect in the NMR chemical shift of HClO 4  salts of 1,8‐bis(dimethylamino)naphthalene derivatives | Zendy

Chmielewski Piotr | Zendy; Ozeryanskii Valery A. | Zendy; Sobczyk Lucjan | Zendy; Pozharskii Alexander F. | Zendy

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Primary 1 H/ 2 H isotope effect in the NMR chemical shift of HClO 4 salts of 1,8‐bis(dimethylamino)naphthalene derivatives

Author(s) -

Chmielewski Piotr,

Ozeryanskii Valery A.,

Sobczyk Lucjan,

Pozharskii Alexander F.

Publication year - 2007

Publication title -

journal of physical organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 66

eISSN - 1099-1395

pISSN - 0894-3230

DOI - 10.1002/poc.1219

Subject(s) - chemistry , deuterium , kinetic isotope effect , naphthalene , protonation , proton , anharmonicity , hydrogen bond , medicinal chemistry , computational chemistry , molecule , organic chemistry , ion , atomic physics , physics , quantum mechanics

The primary 1 H/ 2 H isotope effect for a number of protonated naphthalene proton sponges (DMAN‐s) was measured and correlated with the δ ( 1 H) value and IR spectroscopic characteristics of the [NHN] + hydrogen bonds. A particular role of the unusual anharmonicity expressed in the isotopic ratio ISR ≫ $\sqrt 2 $ is discussed when the fundamental vibrational levels are close to the barrier top for proton/deuteron motion. Copyright © 2007 John Wiley & Sons, Ltd.

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