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Unequivocal evidence about the presence of Fe(III) in μ-oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron]
Journal of Porphyrins and Phthalocyanines ( IF 1.5 ) Pub Date : 2005-01-26 , DOI: 10.1002/jpp.376
CLAUDIO ERCOLANI 1 , FABRIZIO MONACELLI 1
Affiliation  

μ-Oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron] (1) reacts with L-ascorbic acid (LAA) in pyridine containing CH 2 Cl 2 under strictly anaerobic conditions to yield dehydroascorbic acid (DHA) and Pc t FeII ( py )2 (Pct = tetrakis (t-butyl)phthalocyaninato dianion). The reaction is quantitative with a 1:1 LAA/1 stoichiometric ratio. This result can be explained only if it is assumed that the μ-oxo complex 1 (reacting as the bispyridine adduct) is an iron(III) complex able to oxidise LAA to DHA quantitatively. Present findings definitively rule out the alternative iron(II) structure H 2[( Pc t Fe )2 O ] which has been assigned to compound 1 by other authors.

中文翻译:

μ-oxo-bis[tetrakis(t-butyl)phthalocyaninatoiron] 中存在 Fe(III) 的明确证据

μ-氧代-双[四(叔丁基)酞菁] (1) 在含有 CH 的吡啶中与 L-抗坏血酸 (LAA) 反应22在严格厌氧条件下产生脱氢抗坏血酸 (DHA) 和 Pc(py)2(个人电脑= 四(叔丁基)酞菁双阴离子)。反应是定量的,LAA/1 化学计量比为 1:1。仅当假设 μ-氧代络合物 1(作为双吡啶加合物反应)是能够将 LAA 定量氧化为 DHA 的铁 (III) 络合物时,才能解释该结果。目前的研究结果明确排除了替代铁 (II) 结构 H2[( 个人电脑铁)2O ] 已被其他作者分配给化合物 1。
更新日期:2005-01-26
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