Dinuclear cyanines

Dinuclear cyanines, see Thiazoiocyanines 2,2 -Dioxo-A-3,3 -biselenazol-5.5 -inylidene-bis hydrazones, from 2-hydrazino-selenazoles, by oxidation with FeCl3 and H,Oj, 252... 

Apart from the catalytic properties of the Mn-porphyrin and Mn-phthalo-cyanine complexes, there is a rich catalytic chemistry of Mn with other ligands. This chemistry is largely bioinspired, and it involves mononuclear as well as bi- or oligonuclear complexes. For instance, in Photosystem II, a nonheme coordinated multinuclear Mn redox center oxidizes water the active center of catalase is a dinuclear manganese complex (75, 76). Models for these biological redox centers include ligands such as 2,2 -bipyridine (BPY), triaza- and tetraazacycloalkanes, and Schiff bases. Many Mn complexes are capable of heterolytically activating peroxides, with oxidations such as Mn(II) -> Mn(IV) or Mn(III) -> Mn(V). This chemistry opens some perspectives for alkene epoxidation. 

Copper Enzymes in Denitrification Copper Hemo-cyanin/Tyrosinase Models Copper OrganometalUc Chemistry Copper Proteins Oxidases Copper Proteins with Dinuclear Active Sites Copper Proteins with Type 1 Sites Superconductivity. 

Separate sections in this series are devoted to biological and bioinorganic chemistry (see Copper Hemo-cyanin/Tyrosinase Models, Copper Proteins with Dinuclear... 

Larger metal complexes such as metallophthalo-cyanines have also been reported to be absorbed from solution into the pores of MIL-lOl(Cr). Immersion techniques have been employed to effect the uptake of mononuclear and dinuclear metallophthalocyanine complexes to form catalytically active MOF-pthalocyanine materials. For example, approximately 1.2 molecules per pore of [RuPcF16] (PcF16 = perfiuorophthalocyanine) can be incorporated into MIL-lOl(Cr) and this material is... 

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