Dispiro(2,2,6,6-tetramethyl piperidine piperidine 1-oxy)-4,4'(oxazolidine 3'-oxyl)-2',1'-cydobexane] has been studied by ESR and NMR. Detailed analysis of the ESR spectrum of the frozen solution shows that the C-N bond of oxazolidine ring is equatorial relative to the chair piperidiae ring. Landé (g), dipolar (D) and hyperfine (A) tensors have been determined. Proton hyperfine splittings of cyclohexane
通过ESR和NMR研究了Dispiro(
2,2,6,6-四甲基哌啶哌啶1-oxy)-4,4'(
恶唑烷3'-氧基)-2',1'-cydobexane]。冷冻溶液的ESR光谱的详细分析表明,
恶唑烷环的CN键相对于椅子
哌啶环是赤道的。确定了兰德(g),偶极(D)和超精细(A)张量。室温下已通过NMR测定了
环己烷环的质子超细裂,其结果与
恶唑烷环的CN键相对于椅
环己烷环处于赤道位置相符。