High-resolution 207Pb NMR of solid organolead compounds |
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| Affiliation: | 1. Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 11635 Greece;2. European Commission, Directorate-General Joint Research Centre, Directorate F-Health, Consumers and Reference Materials, Retieseweg 111, Geel 2440, Belgium;3. Johnson Matthey Technology Centre, Blount''s Court, Sonning Commons, Reading, RG4 9NH, United Kingdom;4. Coe College, Physics Department, 1220 First Ave NE, Cedar Rapids, IA 52402 United States of America |
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| Abstract: | The combined techniques of high-power decoupling, cross-polarisation and magic-angle rotation have been applied to lead-207 NMR of solid organolead compounds for the first time. Tetra-p-tolyl lead is suitable for spectrometer tuning and matching purposes since a spectrum can be obtained with 5 to 10 transients. Tetraphenyllead was also studied under the same conditions. Solution-to-solid shifts in the resonances for these compounds are modest in magnitude (ca. 40 ppm). Hexa-p-tolyldilead gives a spectrum with a crystallographic splitting of 29 ppm and exhibits a pronounced shielding anisotropy. |
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