Other Complexes of the Series Br

Related bromide salts with other primary and secondary alkyl ligands (R) can be obtained similarly and in comparable yields. Thus, the complexes with R = Me, Bu, i-Pr and cyclohexyl are prepared starting from the corresponding alkyl bromides. In the case of R = Me, gaseous methyl bromide is passed through 

JThe dichloromethane liquor contains the corresponding symmetrical complex 2. 

The ethylcobalt complex crystallizes well as red prisms from methanol (or its mixtures with water) therefore, homogeneity of a given sample can be checked by examination under a microscope. The crystals are moderately photosensitive in the dark they can be stored for at least a year (at room temperature and in air). The complex is soluble, but moderately so, in polar organic solvents such as methanol, formamide, or dimethyl sulfoxide, and somewhat less soluble in water. In solution, the complex is more sensitive to light than it is in the solid state. The structure of the complex has been established by an X-ray singlecrystal diffraction study.1 

The other complexes of the series are characterized like the ethyl homolog (except for X-ray data), and their properties are similar to those of the ethyl complex. 

ALKYL[2-[l-[2-AMINOETHYL)IMINO]ETHYL]-PHENOLATO](l,2-ETHANEDIAMINE)COBALT(ffl) 

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