Piezo-optical constants of gold

The changes induced in the reflectance of single crystal gold due to strain have been determined in piezoreflectance measurements covering the spectral range from 1.7 to 6.5 eV. On the basis of the measurements the band separations L₁ ? L₂′ = 4.6 and X₄ ? X₅ = 3.4 have been determined and a spin orbit splitting of the X₅ level of 0.5–0.7 eV has been resolved.     

Sels d'aziridinium stables c-fonctionnalisés II: Stéréochimie de la quaternisation,synthèses stérèodirigées de composés n-trideutériométhylés et attribution de leurs configurations relatives par el'fet overhauser nucléaire

Aziridines bearing a functionality on a ring carbon and an alkyl or deuteriomethyal group on nitrogen have been quaternized at different temperatures. The configurations of the resulting, stable, diastereomeric aziridinium ions have been assigned by Nuclear Overhauser effect. The stereoselectivity in quaternization is discussed.     

Isomeric structures of the carbenoid,CHF2Li

The carbenoid, CHF₂Li, is suggested by $\text{ab}$$\text{initio}$ molecular orbital theory to exist in three isomeric forms, none of which corresponds to a classical tetrahedral carbon structure.     

Nitroxydes 91 : β-Cétoénolates nitroxydes

β-Ketoaldehyde derivatives of simple piperidine and pyrrolidine nitroxides as spin labelled ligands give paramagnetic three-electron copper complexes.     

Existence et régularité de solutions élémentaires d'un opérateur différentiel abstrait

Sans résumé     

Evidence d'un intermediaire carbonium dans la methoxybromation du cyclooctene cis

The formation of transannular products in the bromination of cis-cyclooctane by NBA in MeOH is taken as direct evidence for the existence of a carbonium ion intermediate.     

Lifetime of f meson

The differential and total cross sections for the photoproduction of the f meson are calculated in terms of the width f→γγ.