𝔖 Bobbio Scriptorium
✦   LIBER   ✦

ESR spectra of the trimethyl—tin and trimethyl—lead radicals

✍ Scribed by J.E. Bennett; J.A. Howard


Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
238 KB
Volume
15
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


The ESR spectra of (CH&Sn-arid (CHa)sPb. hlive been observed. Theg-tensors are anisotropic witngZz 'gfs ( @Y =gxx, and the hypw-inc couplings to "'Sn, 'r9Sn and '07Pb nuclei are extremely large and anisotropic. The results show that there is appreciable spin density in the valence s-orbit& of both radicals, and that the radicals are not plana;, in conirast to the carbon analogue, (CHJ j$..


📜 SIMILAR VOLUMES


The reactions of CF3 and CD3 radicals wi
✍ T. N. Bell; A. E. Platt 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 453 KB

Hydrogen abstraction from boron trimethyl has been studied using the abstracting radicals CF3 and CD3, from the photolysis of the corresponding ketones over the temperature range of 150° to 300°C. The following Arrhenius parameters were obtained: 98 kcal/mole (CFJ + BMe3); log A = 11.6, E = 6.59 kc

On heavy-atom blocking of intramolecular
✍ S.P. Wrigley; B.S. Rabinovitch 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 632 KB

I-he 4-(trimethyl tin)butyI-2 radical. prepared and excited by the chemical activation reaction of H atoms with 4-(trimethyl tin)butcne-1. was found to randomize its excess internal vibrational energy on a subpicosecond time scale, This result differs from an earlier study on the decomposition of 3-

The cage effect and ESR spectra of spin-
✍ A.I. Shushin 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 561 KB

Hore and McLauchlan that shortly after their formation geminate isopropylketyl radicals in isopropanol at law temperature ( ~200 K) exhibit ESR spectra with "antiphase" lineshape, i.e. lines with their low-field halves in emission and high-field halves in absorption. It is shown that a theory which

Syntheses and ESR spectra of radicals pr
✍ Jan Plaček; Ferenc Szőcs; Dietrich Braun; Thomas Skrzek 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 501 KB

## Abstract Tetraarylsuccinonitriles 2a–e were synthesized via oxidative dimerization of diarylacetonitriles 1a–e in basic media. The thermal decomposition of 2 results in two identical cyanodiarylmethyl radicals 3. Both ^1^H and ^13^C NMR analyses of 1a–e and 2a–e and ESR spectra of 3a–e are prese

Interlaboratory study for the quality co
✍ Ph. Quevauviller; Y. Wang; R. M. Harrison 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 417 KB

An interlaboratory programme has been started within the Measurements and Testing Programme (formerly BCR) of the European Commission to evaluate the performance of analytical techniques used for the determination of trimethyl-lead in simulated rainwater and urban dust. A first interlaboratory study