Germanium complexes phthalocyanines

Now a series of tetravalent germanium complexes of this ligand has been synthesized and at the same time the series of germanium phthalocyanines (3,4) has been extended. Accordingly comparisons between the two series have been made possible and these enable the chemistry of octahedral germanium to be more clearly delineated. 

Three publications deal with the synthesis of p-oxo-linked silicon phthalocyanine and porphyrin derivatives. The stepwise syntheses of p-oxo-linked hetero-chromophore arrays containing phthalocyanine, porphyrin, and sub phthalocyanine silicon and germanium complexes have been described [306, 307]. The p-oxo... 

TABLE 84. Selected bond distances and angles for phyrazine complexes of germanium and tin some porphyrin, phthalocyanine and por-... 

Porphyrin complexes, (porph)Ge and (porph)GeCl2, are known for the +2 and +4 oxidation states. Reaction of phthalocyanine with GeCl4 in quinoline gives the highly stable complex (phthalo)GeCl2 in which the two Cl atoms are necessarily trans. It sublimes without decomposition at 450 °C. Recently, the crystal structure of bis(acetato)(/He50-tetraphenylporphyrinato) germanium (IV), Ge (tpp) (0 Ac) 2... 

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