✦ LIBER ✦

Alkali metal NMR experiments on alkali-aromatic radical ion pairs in solution

✍ Scribed by G.W. Canters; E. De Boer; B.M.P. Hendriks; H. Van Willigen

Publisher: Elsevier Science
Year: 1968
Tongue: English
Weight: 415 KB
Volume: 1
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(68)80100-9

No coin nor oath required. For personal study only.

✦ Synopsis

23Na. 85Rb and 87Rb NMR experiments prove the existence of positive and negative spin densities at alkali metal nuclei in alkali-aromatic radical ion pairs. Line-width measurements show that the <*idth of the 85Rb NMR line is determined bsr quadrupolar relaxation, while for 8711b and 23Na also dipolar mechanisms play a significant role.

📜 SIMILAR VOLUMES

The Spin Distribution in Ion Pairs of 1-

The Spin Distribution in Ion Pairs of 1-Aminoanthraquinone Radical Anion and Alkali-Metal Cations

✍ Prof. Dr. Hans Bock; Dipl.-Chem. Bernhard Hierholzer; Dipl.-Chem. Petra Schmalz 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 373 KB 👁 2 views

Structural changes in concentrated solut

Structural changes in concentrated solutions of alkali metal monosubstituted benzophenone radical anions as deduced from 1H NMR measurements

✍ Maria Micha-Screttas; Georgios A. Heropoulos; Barry R. Steele 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 118 KB

## Abstract The radical anions of monosubstituted benzophenones (including 2‐, 3‐ and 4‐methyl‐, 4‐__tert__‐butyl‐ and 4‐phenylbenzophenone) with lithium, sodium and potassium as countercations in tetrahydrofuran (THF) were studied by paramagnetic solvent ^1^H NMR shift measurements in the concentr

Alkylation of the Alkali Derivatives of

Alkylation of the Alkali Derivatives of Malonic Esters. Effect of Ion-Pairing on Reactivity in Me2SO Solution

✍ Carlo Galli; Luigi Mandolini 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 47 KB 👁 1 views

Cation, solvent, and substituent effects

Cation, solvent, and substituent effects on the decay kinetics of alkali metal salts of diaryl disulfide radical anions in nonaqueous solutions

✍ Tokuji Miyashita; Minoru Matsuda 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 406 KB

The transient diary1 disulfide radical anions (RSSR-) were produced in nonaqueous solutions at room temperature by the flash photolysis of a solution of arylthiolate ion pair in the presence of the excess corresponding disulfide. The transient spectra were almost identical with those obtained from y

Effect of alkali metal ions on the pyrro

Effect of alkali metal ions on the pyrrole and pyridine π-electron systems in pyrrole-2-carboxylate and pyridine-2-carboxylate molecules: FT-IR, FT-Raman, NMR and theoretical studies

✍ G. Świderski; S. Wojtulewski; M. Kalinowska; R. Świsłocka; W. Lewandowski 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 904 KB

The FT-IR, FT-Raman and 1 H and 13 C NMR spectra of pyrrole-2-carboxylic acid (PCA) and lithium, sodium, potassium, rubidium and caesium pyrrole-2-carboxylates were recorded, assigned and compared in the Li ? Na ? K ? Rb ? Cs salt series. The effect of alkali metal ions on the electronic system of l