Synthesis and characterization of a spirocyclic phosphaverdazyl radical - cyclophosphazene hybrid: Evidence for spin transfer from a verdazyl radical to a phosphazene ring
Synthesis and characterization of a spirocyclic phosphaverdazyl radical - cyclophosphazene hybrid: Evidence for spin transfer from a verdazyl radical to a phosphazene ring
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螺环磷杂氮自由基-环磷腈杂化物的合成和表征：从磷杂氮自由基到磷腈环的自旋转移的证据
DOI：
10.1139/v02-090
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发表时间：
2002
影响因子：
1.1
通讯作者：
G. W. Patenaude
中科院分区：
文献类型：
--
作者：
T. Barclay;R. Hicks;A. Ichimura;G. W. Patenaude
描述了掺入含有环三磷腈环的螺环骨架中的新型 6-phosphaverdazyl 自由基的合成和表征。 1,1,3,3-双[螺-2',2''-二氧基-1',1''-联苯]-5,5-双(1-甲基肼基)-1,3,5,2,4,6-环三磷腈(7)与原苯甲酸三甲酯反应生成 6-[2,2,4,4-双(2,2'-二氧基-1,1'-联苯)-2,4,6,1,3,5-环三磷腈-6-基]-1,2,5,6-四氢-1,5-二甲基-3-苯基-1,2,4,5,6-四氮杂膦(8)，通过光谱和通过以下方式表征 X射线衍射。 8 的氧化产生 6-[2,2,4,4-双(2,2'-二氧基-1,1'-联苯)-2,4,6,1,3,5-环三磷腈-6-基]-1,5-二甲基-3-苯基-6-磷杂氮基 (5)，通过 EPR 和 ENDOR 光谱对其进行了表征。两个光谱的分析表明，磷杂环的自旋密度诱导了磷腈环的自旋极化，这通过与所有三个磷核的超精细耦合得到证明。关键词：杂环，磷氮化合物，磷腈，稳定...
The synthesis and characterization of a new 6-phosphaverdazyl radical incorporated into a spirocyclic framework containing a cyclotriphosphazene ring is described. Reaction of 1,1,3,3-bis[spiro-2',2''-dioxy-1',1''-biphenyl]-5,5-bis(1-methylhydrazido)-1,3,5,2,4,6-cyclotriphosphazene (7) with trimethylorthobenzoate yielded 6-[2,2,4,4-bis(2,2'-dioxy-1,1'-biphenyl)-2,4,6,1,3,5-cyclotriphosphazen-6-yl]-1,2,5,6-tetrahydro-1,5-dimethyl-3-phenyl-1,2,4,5,6-tetrazaphosphorine (8), which was characterized spectroscopically and by X-ray diffraction. Oxidation of 8 yielded 6-[2,2,4,4-bis(2,2'-dioxy-1,1'-biphenyl)-2,4,6,1,3,5-cyclotriphosphazen-6-yl]-1,5-dimethyl-3-phenyl-6-phosphaverdazyl (5), which was characterized by EPR and ENDOR spectroscopy. Analysis of both spectra indicate that spin density from the phosphaverdazyl ring induces spin polarization into the phosphazene ring, as evidenced by hyperfine coupling to all three phosphorus nuclei.Key words: heterocycle, phosphorusnitrogen compounds, phosphazenes, stabl...