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研究了从Sm~(3+)到Lu~(3+)(Gd~(3+)除外)九个稀土单酞菁化合物的~1H NMR化学位移.发现对重稀土化合物,酞菁环上α、β质子诱导位移符号的变化呈现“三个一组效应”.即,对Tb~(3+)、Dy~(3+)、Ho~(3+)化合物,~H共振谱线移向高场,而对Ex~(3+)、Tm~(3+)、Yb~(3+)化合物,则移向低场.化学位移的最大变化发生在4f~8构型(Tb~(3+))处.所得结果与Bleaney理论一致.测得部分稀土单酞菁化合物的~13C NMR谱,讨论了化学位移的变化.
The ~ 1H NMR chemical shifts of nine rare earth monophthalocyanines from Sm ~ (3+) to Lu ~ (3 +) (except for Gd ~ (3+)) were studied. , The change of sign of β-proton-induced displacement showed “three groups of effects.” That is, the resonance lines of Tb ~ (3 +), Dy ~ (3 +), Ho ~ (3+) Field, and shifted to lower field for Ex ~ (3 +), Tm ~ (3 +) and Yb ~ (3+) compounds.The maximum chemical shift occurred in Tb ~ (3+ ). The results obtained are in accordance with the Bleaney theory, and ~ 13C NMR spectra of some of the rare earth monophthalocyanine compounds were measured, and changes in chemical shifts were discussed.