Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Correlation between the covalency and the thallium-205 nuclear magnetic resonance chemical shift in oxides and halides

Journal Article · · J. Solid State Chem.; (United States)
/sup 205/Tl chemical shift measurements were carried out on thallium(I) oxides and halides. A correlation between the chemical shift and the stereochemical activity of the 6s/sup 2/ lone pair of Tl/sup I/ was established; the greater this activity, the greater the absolute value of the chemical shift. For the halides, optical and chemical shift measurements gave access to the Tl-X bond ionicity via Ramsey's equation. In thallium(I) halides the absolute value of the chemical shift increases with the covalency. The work of Glaser on thallium(III) halides showed the chemical shift to decrease with increasing covalency. An explication of this difference is proposed. The hyperfine coupling constant A of the paramagnetic compound Tl/sub 4/MnI/sub 6/ was determined by the study of the chemical shift as a function of the susceptibility. This constant A is seen to be weak (-7 KG/..mu../sub B/).
Research Organization:
Laboratoire de Chimie des Solides, Nantes, France
OSTI ID:
5425510
Journal Information:
J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 63:3; ISSN JSSCB
Country of Publication:
United States
Language:
English