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Gold(II) phthalocyanine revisited: Synthesis and spectroscopic properties of gold(III) phthalocyanine and an unprecedented ring-contracted phthalocyanine analogue

机译:黄金(II)酞菁的再研究:黄金(III)酞菁和空前的环收缩酞菁类似物的合成和光谱性质

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摘要

In 1965, gold(II) phthalocyanine(AuPc, 1) was described to be synthesized from unsubstituted 1,3-diiminoisoindoline and gold powder or AuBr. Compound 1 has been regarded as a rare example of a paramagnetic gold(II) complex. However, its chemistry, especially the oxidation state of the central gold ion, has not been previously explored due to the inherent insolubility of 1 caused by its unsubstituted structure. In our attempt to synthesize soluble AuPcs by using 5,6-di-substituted 1,3-diiminoisoindolines, gold(III) phthalocyanine chloride(3) and a gold(III) complex of an unprecedented ring-contracted phthalocyanine analogue([18]tribenzo-pentaaza-triphyrin(4,1,1), 4) were isolated. With this discrepant result from the original literature in hand, a reinvestigation of the original AuPc synthesis by using unsubstituted 1,3-diiminoisoindoline and various gold salts(including gold powder and AuBr) was performed, finding that only unsubstituted analogues of 3 and 4 or free-base phthalocyanine were obtained.
机译:1965年,有人描述了酞菁金(II)(AuPc,1)是由未取代的1,3-二亚氨基异吲哚啉和金粉或AuBr合成的。化合物1被认为是顺磁性金(II)配合物的罕见实例。但是,由于其未取代的结构所固有的1的固有不溶性,因此以前尚未对其化学性质,尤其是中心金离子的氧化态进行过探索。在我们尝试通过使用5,6-二取代的1,3-二亚氨基异吲哚啉,金(III)酞菁氯化物(3)和前所未有的环缩合酞菁类似物的金(III)配合物来合成可溶性AuPcs [[18]分离了三苯并五杂氮杂三卟啉(4,1,1),4)。有了与原始文献不同的结果,使用未取代的1,3-二亚氨基异吲哚啉和各种金盐(包括金粉和AuBr)对原始AuPc合成进行了重新研究,发现只有3和4的未取代类似物或获得了游离碱酞菁。

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