Iron-indium complexes

Porphyrin, tetrahydro-metal complexes geochemistry. 6, 862 Porphyrin, tetraphenyl-indium complexes radiopharmacology, 6, 971 iron complexes, 4, 260,1266 zinc complexes spectra, 6, 617... 

In similar investigative studies for bimetalhc single-source precursors, an iron indane derivative was synthesized by the reaction Na[(Cp)(CO)2Fe]0.5THF with BrIn[(CH2)3NMe2]2 in THF (Scheme 18)). The analogous Ni, Co, and Mn intermetallic complexes were also successfully prepared with either cyclopentadiene or carbonyl ligands. Photolysis of the indium-iron derivative [ Cp(CO)2Fe 2ln(CH2)3NMe2)2]... 

The similarities between Ga, In and Fe " are manifest in vivo by the binding of all three ions to the serum protein transferrin, Tf, normally used for iron transpQit. The formation constant for the Ga -Tf complex has been found to be and Welch has calculated values for the equilibrium constants for the exchange of trivalent metal ions between EDTA or DTPA and Tf as shown in Table 19. These figures show that only the DTPA complex of Ga is stable with respect to metal exchange with Tf. Table 19 also shows values for the equilibrium exchange reaction between Tf and hydroxide ion. These indicate that, while the indium-Tf complex should be stable to hydrolysis in vivo, in the long term the insoluble Ga(OH)3 should form from the... 

New catalysts have heen recently developed for promoting the aldol-type addition of acetate-derived silyl ketene acetals with high efficiency 10-methylacridinium perchlorate (5 mol %), cationic mono- and dinuclear iron complexes (5 mol %), t-hutyldimethylsilyl chloride-indium(III) chloride (10 mol %), [l,2-henzenediolato(2—)-0,0 ]oxotitanium(20 mol%), phos-phonium salts (7 mol%), and trityl salts (5-20 mol%). ... 

X-ray powder diagrams obtained by the Guinier method show the tris (O-ethyl dithiocarbonato) complexes of chro-mium(III), indium(III), cobalt(III), iron(III), arsenic(III), and antimony(III) to be isomorphous. Carrai and Gottardi have determined the structure of the arsenic(III)18 and anti-mony(III)19 complexes. Crystallographic data for the cobalt(III) and chromium(III) ethylxanthate complexes are given by Derenzini20 and Franzini and Schiaffino,21 respectively. 

Finally, we note a report of the synthesis and structure of a mixed transition metal-indium complex containing iron and manganese derived from the reaction between [Hg Mn(CO)5 2], [Fe(CO)5], and indium metal, viz. [ Fe(CO)4 2 /i-InMn(CO)5 2], 16 (27) (see Fig. 5). This complex is structurally similar to the manganese-indium complex 11 with each Mn(CO)4 fragment replaced in 16 by an Fe(CO)4 moiety. The increase in the electron count by two has been assumed to account for the absence of a Fe—Fe bond in 16 in contrast to the suggested presence of a corresponding Mn—Mn... 

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