Infrared and electron spin resonance studies of the effect of γ-irradiation on [Cr(CN)5NO]3–, [Mn(CN)5NO]3–, and [Fe(CN)5NO]2– in alkali-metal halide host lattices

M. Bloom, J. Raynor, K. Root, M. Symons
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引用次数: 3

Abstract

I.r. and e.s.r. spectra of γ-irradiated [Cr(CN)5NO]3–, [Mn(CN)5NO]3–, and [Fe(CN)5NO]2– in alkali-metal halide host lattices are reported. New i.r. absorptions are attributed to species resembling [Cr(CN)5NO]4–and 5– and [Mn(CN)5NO]2–and 4–. There is e.s.r. evidence for the formation of [Mn(CN)5NO]2– and [Fe(CN)5NO]3– ions, but no feature attributable to [Cr(CN)5NO]5– or [Mn(CN)5NO]4– was detected. Possible reasons for this apparent contradiction are discussed. There was evidence for the metal ion in [Mn(CN)5NO]3– migrating though the lattice to sites where it could exist in the high-spin d5 form.
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红外和电子自旋共振研究了γ辐照对碱金属卤化物基体晶格中[Cr(CN)5NO]3 -、[Mn(CN)5NO]3 -和[Fe(CN)5NO]2 -的影响
报道了γ辐照[Cr(CN)5NO]3 -、[Mn(CN)5NO]3 -和[Fe(CN)5NO]2 -在碱金属卤化物基体晶格中的红外光谱和e.s.r.光谱。新的红外吸收归因于类似[Cr(CN)5NO]4 -和5 -和[Mn(CN)5NO]2 -和4 -的物质。有esr证据表明[Mn(CN)5NO]2 -和[Fe(CN)5NO]3 -离子的形成,但未检测到[Cr(CN)5NO]5 -或[Mn(CN)5NO]4 -的特征。讨论了这种明显矛盾的可能原因。有证据表明[Mn(CN)5NO]3 -中的金属离子通过晶格迁移到它可以以高自旋d5形式存在的位置。
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