โ Scribed by H. Lemaire; A. Rassat; P. Rey
No coin nor oath required. For personal study only.
The synthesis of a new stable nitrcxide radical !I) enables us to show by nuclear magnetic resonance that the lona-ranee coupling. oiten observed in bicg'cli, structure. has a positive sign. An interpretation of the stereospecificity of this coupling is proposed or; a molecular orbital basis.
๐ SIMILAR VOLUMES
The crystal structure of a new phase of the pnitrophenyl nitronyl &oxide radical compound is described. A study of its magnetic properties reveals the largest intermolecular ferromagnetic coupling reported so far among a series of polymorphs of this compound.
## Abstract A comprehensive experimental investigation of nitroxideโmediated radical polymerization (NMRP) of styrene using 2,2,6,6โtetramethylโ1โpiperidinyloxy (TEMPO) as controller is presented. Polymerizations with a bimolecular initiator (benzoyl peroxide; BPO) were carried out at 120 and 130ยฐC
Spin-lattice relaxation time, T, of tan01 (protonated and deuterated), in crystal matrix of &hydroxy-2,2,6,6-tetramethylpiperidine has been studied in the range IO-300 K. Continuous saturation technique was applied to inhomogeneous broadened ESR signals. For tanol-p a transition was observed at 133