✍ Scribed by N.M Atherton; S.J Strach
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The p-proton hypertine coupling constants in S-substituted ethyl radicals CH2-CH2-X (X=CHJ, NH2, OH, F, SiH9, PH2, SH, Cl) were computed as a function of the rotational angle (Y about the C.C, bond by ab initio calculations at the UHF/DZ+d level. They follow the relation aHg (0,a) =A+ B cos\*O + Cco
## Abstract The EPR spectrum of doxyl cyclododecane (3,3‐dimethyl‐1‐oxa‐4‐azaspiro[4.11] hexadec‐4‐yloxy) exhibits a large (0.195 mT at −39°C) temperature‐dependent proton hyperfine coupling. Selective deuteration demonstrates that the coupling is to one of the protons in the CH~2~ groups adjacent
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.