Cobalt miscellaneous complexes

Miscellaneous. Trisyl azide itself underwent an intramolecular C-EI amination in the presence of a catalytic amount of cobalt porphyrin complex to give the corresponding benzosultam (eq41). ... 

The Lewis acid/oxime [66] and the formaldehyde/hydrazone [127, 128] capping processes permit the assembly of clathrochelate iron(II) or cobalt(II) complexes [M(L1001)]+ to [M(L1006)]+ based on miscellaneous oxime-hydrazone ligand systems (Eq, 4,34) [129, 130],... 

Miscellaneous Metal Ions.—Mention has been made already of a relatively slow formation reaction for the normally labile manganese(ii) ion. Incorporations of the labile bivalent metal ions zinc(ii), copper(ii), manganese(n), cobalt(ii), and nickel(n) into water-soluble porphyrin molecules such as tetrakis-(4-N-methyI-pyridyl)porphine, tetrasulphonated tetraphenylporphine, and uroporphine are also relatively slow reactions. However, by taking into account the porphyrin deformation which is necessary, an Id mechanism can be fitted to these reactions. The rates of formation and dissociation of nickel(ii), copper(n), cobalt(ii), and zinc(ii) complexes of the sterically hindered ligand 1,4,8,11-tetramethyl-1,4,8,11-tetra-azacyclotetra-decane (Meicyclam) are also 10 —10 smaller than is normal for these metal ions. ... 

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