Dimethyl-glyoxime crystal

Figure 5. Spatial arrangement of reactants under H-atom transfer in /-irradiated dimethyl-glyoxime crystal. Radical pair J transfers into radical pair K as result of H-atom transfer from molecule C to radical B [72],...

Crystals of native oxidized ascorbate oxidase were anaerobically dialyzed in microcells against 50 mM sodium phosphate buffer, pH 5.2, containing 25% (v/v) methylpentanediol (MPD), 1 mM EDTA, 2 mM dimethyl-glyoxime (DMG), and 5 mM ferrocyanide for 7 and 14 hr. 

Among the more widely studied 2,3-C-disubstituted ligands related to ethylenediamine are sbn and stien (Table 3). These ligands can exist in meso and racemo forms and the properties e.g. solubility) of transition metal complexes (especially Co" ) with the two forms of this type of ligand are often sufficiently different as to allow amine isomer separation to be achieved without separation of the amine mixture. Meso and racemic 5bn are prepared together by the reduction of dimethyl-glyoxime and can be separated by fractional crystallization of the dihydrochloride salts. There are, however, stereospecific synthetic routes available for the meso and racemo forms of stien (Table 6). 

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